2012年11月27日星期二

What's Special about Armored Fiber Optic Patch Cables

An armored fiber patch cable indicates a fiber optic patch cable with stainless armor inside the cable jacket to protect the central unit of the cable. It can also be considered to be formed with a strong fiber optic connector and an armored fiber optic cable. Armored fiber optic patch cable is considered to be an advanced or structures improved fiber optic patch cable. Because of the special structures that the armored fiber optic patch cable has, it makes the armored fiber patch cord shares some special features compared with the standard fiber patch cables, which can be listed below:

Flexibility
Armored fiber optic patch cable retain all the features of standard patch cord, but they are much more strong and flexible. Because of the stainless steel armor inside, it can be resistant of high tension and pressure, even it is step by an adult person, the armored fiber optic patch cables will not get damaged. It is also almost impossible to be bent or dragged to broken.

Anti-rodents
Armored fiber patch cable also shares anti-rodents features, when they are used for outdoor use, people do not need to worry about the rodent animals like rates may bite the cables and make them broken.

Light and compact
Usually the armored fiber optic patch cords are smaller outer diameter than the standard patch cords, this make them space saving and actually light weight. And they can be handled as easily as other electric cables. Armored fiber patch cables are with different jacket colors or jacket types like PVC, PE or OFNR and different types of termination types including SC, ST, FC, LC, MU,SC/APC, ST/APC,FC/APC,LC/APC etc.

In a word, the armored fiber optic patch cables are designed for being used in harsh environment, in which the traditional standard fiber optic patch cable can not fit or get good performance. It is made with special strong connector and fiber armored cable, it can protect the cable from damage caused by twist, pressure or rodent bite. Installation procedure and maintenance is also easy when use the armored fiber patch cables, which is actually an ideal choice for people who is looking for fiber optic patch cords with additional durability, protection and light weight features.

Ingellen online wholesale platform which ingellen.com supplies ranges of armored fiber optic cables for different application requirements like simplex or duplex SM9/125, OM1 62.5/125, OM2 50/125, 10G OM3 or OM4 fiber patch cables with SC,FC,ST,LC,MU,MTRJ,UPC,APC connector types. 10G OM3 fiber optic patch cable with 50/125 multimode is typically used in 10 Gigabit Ethernet to transmit 10G signals and the bandwidth supported is as specified IEEE802.3z. And our OM4 fiber optic patch cable assemblies are ready to meet the requirement for future 40G and 100G fiber optic networks, the flexible, light and compact features of the OM4 armored fiber patch cables makes it an ideal alternative to standard OM4 patch cables where excellent crush and kinking resistance.

Hybrid Cable for Optical and Electrical Transmission

Photoelectric hybrid cable is a kind of outdoor fiber optic cable. Its elements are loose tube, cable core and sheath. The loose tube is made of a high modulus plastic. The tubes are filled with fibers and a water-resistant filling compound. Tubes and two wires are stranded around the strength member into a compact and circular cable core which is filled with the filling compound to protect it from water ingress. The strength member is a Fiber Reinforced Plastic (FRP). Then an Aluminum Polyethylene Laminate (APL) is applied around the ca simplex cable and cable core. The cable is completed with a PE sheath. It also contains small fiber diameter and bending radius. Both optical signal transmission and electricity transmission adapt to this cable. This type of cable has its own characteristics which has excellent strip ability of tight buffer.
The utility model discloses a photoelectric hybrid cable of high water resistance. The hybrid cable includes a polyethylene outer sheath, chrome plating plastic-coated steel band layer, a water resistant material layer, and a polyethylene inner sheath which are arranged from outside to inside, and the cross section of every sheath or layer is in a circular shape. The polyethylene inner sheath is provided inside with a core cable, and the periphery of the core cable is provided with two filling ropes, two electric cable lines, and an optical cable line. The electric cable line includes an outside electric cable sheath and an inside feeder. The core cable includes an outside PE sheath and an inside galvanized stranded wire. The optical cable line includes an outside PBT loose cannula and four optical fibers coated in the PBT loose cannula. The beneficial effects achieved by the photoelectric hybrid cable of high water resistance are that: (1) the cable can be introduced to home once and for all; (2) the water resistant effect is excellent; (3) the tensile property and the compression property are greatly improved.
Characteristics:
Good mechanical and temperature performance
High strength loose tube that is hydrolysis resistant
Special tube and core filling compound ensure the cable watertight
Specially designed compact structure is good at preventing loose tubes from shrinking
PE sheath protects cable from ultraviolet radiation
Excellent stripping performance of tight buffer fiber
Diameter and bending radius small, it can installation freely in narrow room, have both optical signal transmission and electricity transmission
Applications:
Optic-fiber Communication System;
Optical Access Networks; LAN, Optic-fiber Sensors;
Optic-fiber Date Communication;
Optic-fiber CATV;
Optic-fiber Test Equipment

2012年11月23日星期五

Some Points about Fiber Optic Connector

As one of the worldwide leaders in designing, manufacturing and distributing high performance Fiber Optic?Connector, Ingellen provides various fiber optic connector:FC , LC , SC , ST, Ceramic Ferrules& Sleeves , DLC, MTRJ, SMA905, E2000, D4, MU, MPO, ESCON, BICONIC, DIN, FDDI, LX.5 Fiber?Optic Connector and Fast Connector.

Fiber Optic Connector has been widely used in fiber optic transmission lines, fiber optic patch panels and fiber-optic test instruments and meters. The Fiber Optic Connector is one of the most?essential components for fiber optic communication. It mate or connect with optical devices, modules, and fibers. Fiber connector is also the key part used in fiber Patch cord and fiber Pigtail.

Development of Fiber Optic Connector

With the expansion of technology development and application of fiber optic patch cables are also achieving rapid development. The types of fiber optic connectors on the market are probably 12 or?more, each of which was launched to the specific needs, of course, came to meet, there are some technical limitations. The trend in the market is developing at a moderate price, compact plug-mode?and all can support the requirements of the new transmission distribution system. As users expect that the ongoing development of the telecommunications industry also supports the large-scale?application of the optical fiber, in large part due to the rapid growth of demand in the way of communication and entertainment services on the fiber link.

Requirements for Fiber Optic Connector

The fiber optic connection is very stringent accuracy of the equipment,The species of fiber patch cord are many kinds. so the connector must be very clean. Fiber optic connectors and accessories?are usually mounted on a series of house, a fingerprint or external dust seriously affect the performance of the connector, and even the loss of communication. Therefore, the connector can be?stored in clean protective sleeve without connection. Then we should also put fiber optic connector. Previously wedge ?ferrule? all fiber optic connector design is used to provide an accurate, if?port select. The fiber optic terminal in the ferrule is an integral part of glue or crimping narrow tires. Ferrules are usually made of a relatively hard material such as ceramics, produced?naturally, can also be made of stainless steel, plastic, or from a tungsten carbide material.

Differences of SFP, GBIC, XFP and SFP Plus

A transceiver is a device composed of optoelectronic devices, functional circuitry and optical interface. The transmitter and receivers are combined and share common circuitry or a single housing. When no circuitry is common between transmit and receive functions, the device is a transmitter-receiver. Technically, transceivers must combine a significant amount of the transmitter and receiver handling circuitry just like transponders, transverters and repeaters. In the transmitter section, a certain bit rate signal after processing by the internal driver chi promote the LD or LED to emit a corresponding rate of the modulated optical signal, the automatic control circuit with an internal optical power, so that the optical signal output power is kept stable. In the receiver section, the input signal with a certain bit rate is converted into an electric signal by a light detection diode and output a corresponding bit rate after preamplifier, which is generally PECL.

SFP and GBIC Transceivers
GBIC (Gigabit Interface Converter) is a hot-swappable Gigabit Interface optical module with SC connector. A gigabit interface converter (GBIC) is a standard for transceivers, commonly used with Gigabit Ethernet and fiber channel. GBIC module is hot pluggable, this feature allows a suitably designed enclosure to be changed from one type of external interface to another simply by plugging in a GBIC having the alternative external interface. SFP is also called mini-GBIC, SFP module is the abbreviation of Small Form Pluggable. It is half the volume of GBIC and can be configured double number of ports on the same panel. Other basic functions is the almost the same with the GBIC.

SFP and SFP Plus
The main difference between SFP and SFP Plus is that the SFP+ is used in Gigabit Ethernet applications while SFP is for 100Bse or 1000Base applications. SFP+ transceivers use the same dimensions of pluggable transceivers in the 10Gbs Ethernet and 8.5Gbs fiber channel with SFP and SFP comply with standards of IEEE802.3 and SFF-8472.

SFP Plus and XFP
SFP plus and XFP are both 10G transceivers, and share the same features with other 10G transceivers. The main difference between them is SFP+ is more compact sized than XFP. The smaller SFP+ transfer the modulation functions, serial/deserializer, MAC, clock and data recovery (CDR) and EDC functions from the module to the motherboard on the card. XFP comply protocol of XFP MSA while SFP plus comply with IEEE802.3, SFF-8431, SFF-8432.

The fiber optic transceivers, as the core of optoelectronic device in the WAN, MAN or LAN application, have also developed various types along with the increasing in complexity. 10G transceivers have experienced developments from 300Pin, XENPAK, X2, XFP and finally realized using the same sized with SFP to transmit 10G signals, what is SFP+. SFP, with its advantages of miniaturized and low-cost, meet the demand of high-density fiber transceivers, and now has replaced the XFP and becomes the main stream of 10G transceivers markets.

2012年11月21日星期三

GPON ONU and OLT SFP Modules – Ingellen

GPON (Gigabit Passive Optical Networks) is the leading technology used in FTTx (FTTH) deployments. Unlike point to point optical network topology, PON is different than in that it is a Point to Multi-Point (P2MP) topology. A PON consists of an Optical Line Termination (OLT) on the provider's side and one or many Optical Network Units (ONU) on the users' side. From the Central Office’s?(CO) OLT with GPON OLT SPT transceiver, a single strand of fiber goes out to a passive optical splitter where its signal is multiplied to 64 (128) different lines. The Transmit and Receive signals operate on different wavelengths allowing bi-directional operation over a single fiber. Anything transmitted from the OLT is transmitted to all 32 lines. It is up to the customer’s system ONU to determine what packets are for that customer. The PON current standards have defined downstream data rates up to 2.5Gbps.

GPON OUN SFP
GPON OUN SFP 20 Km is a small form-factor pluggable module used for the ONU of GPON with 2.5Gbps in downstream and 1.25Gbps in upstream. It is high performance module for single fiber communications by using 1310nm burst-mode transmitter and 1490 nm continuous-mode receiver.
Features
2x10 SFF Package With SC Receptacle, SC Pigtail
1.244Gbps, 1310nm Burst Mode Transmitter
2.488Gbps, 1490nm Continuous Mode Receiver
Un-cooled DFB Laser and APD High Sensitivity Detector
Up to 20km Distance at 9/125μm G.652 SMF With 32:1 Split Ratio
Single 3.3V Power Supply
LVTTL Tx_Dis and SD
Class 1 FDA and IEC60825-1 Laser Safety Compliant
Operating Case Temperature
Standard: 0℃~+70℃
Industry: -40℃~+85℃
Compliant with ITU-T G.984.2 and G.984.2 Amendent-2006
Compliant with SFF MSA Specific
Burst mode Tx DDMI function
Applications
Access Network
Fiber to the Home, Curb, Office (FTTx)

GPON OLT SFP
GPON OLT SFP 20 km is also a high performance module for single fiber communication by using 1490nm continuous-mode transmitter and 1310 nm burst-mode receiver and compatible with GPN OLT per ITU-T G.984.2.
Features
SFP Package with SC receptacle
1.244Gbps, 1310nm BM APD Receiver
2.488Gbps, 1490nm Transmitter With Isolator
Fast Signal Detect feature reduces ranging overhead
Simplified OLT Reset Timing
Compliant With ITU-T G.984.2
Up to 20km distance at 9/125μm G.652 SMF
28dB Link Budget
Operating Case Temperature
Commercial: 0℃~+70℃
Industrial: -40℃~+85℃
Compliant with SFP MSA
Applications
GPON 20km OLT Side
Access Networks
Fiber to the Home, Curb, Office (FTTx)

What is a Fiber Loopback Cable?

Fiber loopback is a media of return patch for a fiber optic signal that widely used for fiber optic testing, fiber network repair and fiber optic equipment diagnosis. Loopback test is a hardware or software method to test physical link problems of the fiber optic networks. It is realized by feeding a received signal or data back to the sender. Fiber optic loopback cables types is classified based on the fiber connector types, optic fiber modes.
Traditional fiber optic loopback is like a fiber optic patch cable with two fiber connectors at each end, forming a loop. Nowadays there are also another improved fiber loopbacks which called molded fiber optic loopbacks or fiber optic loopback modules. It is more compact sized and stronger. The molded loopback use an outer enclosure to protect it and from the outside you do not see the optical cables, they are more compacted size and stronger then the fiber loopback cables.
Just like the fiber patch cable, the fiber loopbacks is made up of different kinds of outer jackets, cable diameters, length or terminations that various according to customers’ special requirements.

Fiber Optic Loopback Applications
Fiber amplifier
Optical fiber sensor
Tester, Cable TV systems
Communications connections

Fiber Optic Loopback Types
Based on the optical connector types on the loopback, there are SC, LC, MTRJ, ST, FDDI etc. The most commonly used fiber optic loopbacks are SC and LC type.
According to the optic fiber mode type of the loopback cable, there are single mode 9/125 fiber optic loopbacks, 10G multimode loopback, multimode 50/125 fiber optic loopbacks and 62.5/125 fiber optic loopbacks. 10G loopback module is used in 10G multimode 50/125 Fiber Testing application. Typically single mode SC type and LC type fiber optic loopbacks are blue color, typical multimode LC and SC type fiber loop backs are beige color, this also goes with the practice of fiber optic patch cables.

Specifications
Connector type: SC, LC, MTRJ available
Optical fiber mode: multimode 50/125 um, multimode 62.5/125 um, single mode 9/125 um
Working wavelength: Available wavelengths are 850nm, 1310nm and 1550nm. 850nm and 1310nm are for multimode applications and 1550nm is for single mode applications.
Insertion Loss (dB) ≤ 0.2
Exchangeability ≤ 0.2 (500 cycle passed)
Temp. Range ≤ 0.2 dB ( - 40 to +80 degree centigrade)

Wide ranges of fiber loopback cables are available at ingellen.com, they are designed with compact size, totally complied with the industrial standard which is ideal choice for your fiber optic testing. Besides we also provide custom fiber loopback according to your required jacket types and cable diameters, length or terminations. All our products are fully tested to comply with compliant with fast ethernet, fiber channel, ATM and Gigabit Ethernet Welcome to purchase or customize fiber optic loopback cables or the connector configurations and special polished for them via ingellen.com or contact sales@ingellen.com right now!

2012年11月18日星期日

How to Choose Fiber Optic Adapter

As we know, fiber optic connector is an important fiber optic component used to link two fiber optic lines together. Beside connector, there is also another item, which is fiber optic adapter with panels to connecting multi fiber optic line. Specifically, the fiber optic adapter is a small device that used to terminate or link the fiber optic cables or fiber optic connectors between two fiber optic lines. In order to realize the fluent fiber optic connection, the fiber optic adapter panel shapes or types should be in accordance with the fiber optic connectors or cables. Common shapes of the adapters are square, rectangular, or round that with FC, LC, ST, SC, MTRJ types. There are also single mode and multimode fiber optic adapters or single mode and multimode fiber optic connections. So when purchasing fiber optic adapters for fiber connections, it is essential to choose the right fiber optic adapter according to the fiber optic connector or fiber optic cables.

Standard or flange fiber optic adapter is a typical type used to connect the same types of optical connector, there are SC, ST, LC and MTRJ type available for choosing. These adapters are comprised of two or more female connections that fiber optic cables can be plugged into. flange fiber optic adapters are typically with ceramic sleeves, fitting for both single mode and multimode fiber optic connections.

Hybrid fiber optic adapters are another type used to link two different kinds of fiber connectors or cable assemblies. For example, LC to SC hybrid adapter, it can link LC connector at one side and SC connector at the other side. Hybrid fiber adapters can be also used for single mode and multimode fiber optic connections with PC or APC sleeves, in simplex and duplex style. Hybrid fiber adapters use high precision ceramic sleeves because it can provide reliable ferrule mating and ensure low insertion loss and return loss during the connecting. This type of optical fiber adapters is with compact sized and widely used for network environments integrating different configurations and telecommunications networks.

Bare fiber adapter is structured with optic fibers on one side and the adapter on the other side. It is used to link the bare optical fiber cable to fiber optic equipments. The adapter side is a connector that can plug into the equipment and enable a quick and easy termination for the optic fiber. Because this feature of the bare fiber adapters, they are widely used for emergency situation for fast and temporary fiber optic or urgent connection, testing bare fiber, fiber on the reel, fiber before and after installation and so on. SC, FC, LC, ST bare fiber adapters is now available in the market.

A single optical fiber adapter usually could hold a dozen of cables, if you splice multiple adapters together, it can even make hundreds or thousands of connection. Knowing what kind of connections, multimode or single mode, simplex or duplex, as well as the connector types can help you choose the corresponding right type of optical fiber adapter for application.

2012年11月14日星期三

What is a Fiber Pigtail about

Fiber pigtail also called fiber optic pigtail refer to a single, un-buffered optical fiber that has an optical connector on one end and a length of exposed fiber at the other end. The end of the pigtail is stripped and fusion spliced to a single fiber of multi-fiber trunk to break out the multi-fiber cable into its component fibers for connection to the end equipment. Fiber pigtails are often used in a fiber termination box, by linking the fiber optic cables to fiber converters or fiber optic transceivers to constitute a light data transmission path. Other components used in this path include optical fiber coupler, fiber patch cable etc.

Based on the fiber mode, the fiber pigtail can be divided into multimode fiber pigtails and single mode fiber pigtails. Multimode fiber pigtail is with original jacket can transmit to 500m with working wavelength of 850 nm. It is often used for short-range connectivity. Single mode is with yellow jacket, the working wavelengths are 1310nm and 1550nm and transmission distance is 10km and 40km respectively.

According to the ITU-T (International Telecommunication Union Telecommunication) standardization organization, fiber optic pigtails are categorized into Fiber pigtail that conforms to G.652 and G.653 fiber splicing technology standard. Fiber optic splicing technology is primarily to use a fiber splicing machine to fuse splice the fiber with fiber or the fiber with fiber pigtails. In this process, the bare fibers of the fiber optic cables are fuse spliced with the fiber pigtails to become a whole. With the fiber optic connector at one end of the fiber pigtails, they are connected to fiber optic transceivers, the optical fibers connected with the twisted pairs, and then connect with the information outlets. Main tools used in the fiber splicing technology include fiber termination box, fiber optic converter, fiber optic transceiver, fiber pigtail, optical fiber coupler, fiber stripper, and fiber optic cleaver, etc. Currently fiber optic pigtail with SC, ST, FC, LC MT-RJ, SC/APC, FC/APC, E2000 fiber optic connectors are available in the market.

Fiber cables need to have connectors fitted before they can attach to other equipment. Pigtails and fanout kits are two different solutions to terminate the fiber with connectors. Pigtails is generally refers to two fiber optic cable connection with is general used in the fiber termination box in the wild for fusion splicing two optical cable fibers. fanout kits is mainly used in the end of fiber optical cables when connected to the other devices, it needs a fiber pigtail accomplish the connection.

2012年11月12日星期一

FS7002 Handheld Fiber Light Source - Ingellen

Ingellen Co., is offering large quantities of handheld fiber light source, which is designed for different applications of fiber production and research devices, fiber network testing and maintenance and optical communication teaching and test. Fiber optic light source is a fiber optic test equipment to measure the fiber optical loss for both single mode fiber cable and multimode fiber cables. The optical light source is usually used in conjunction with other types of test equipments such as optical power meter and fiber identifiers o test fiber optic cables.

Ingellen Handheld laser fiber light source, model FS7002 with compact and easy-to-use features, offers ccuracy and reliability for testing the usual single-mode optical fiber connector loss, a single-mode fiber-optic network, LAN, FDDI, ATM , FTTH fiber optic systems. The handheld stable source with the international advanced level in the micro-processing hardware, software technology, microelectronic technology, and surface mount (SMT) technology provides its users with high performance, high reliability, which are the best performance at home and the most practical appearance of the light source. With the current international advanced level, handheld light source provides continuous or modulated light output (2 KHz) in the state of the two working conditions.?Our FS7002 fiber light sources series consist of Fiber Optic Light Source FS7002 (1310/1550nm), FS7002A (850/1300nm) and FS7002P (1490/1310/1550nm).

Features:
Larger and more stable output power comparable to desktop source
Stabilized output Using the Single key to switch the wavelength is flexible and convenient
High reliability Universal interface with three types of adapter: FC /SC / ST that is easy to operate Small size/light weight/ high reliability
Flexibly switch the wavelength Battery-powered
Convenient field work
Omnipotence joint Backlight at night

Specifications:
Emitter Type: F-P LD
Output Power: -7~ -9 dBm
Output Stability: ±0.10dB/1h (20°C)
Mode of Light Output: CW & MOD
Modulation: CW、270Hz、1KHz、2KHz
Optical Interface: FC adapter(SC、ST Optional
Operating Temperature: -10°C~+ 60°C
Storage Temperature: -20°C~ + 70°C
Work humidity: <95%
Automatic shutdown time: 10min
Battery: 9V alkaline battery
Dimensions: 16.5×8.0×3.5cm
Weight: 280g

Except for the mentioned FS7002 Handheld Fiber Light Source series, Ingellen also supply other wavelengths of dual-wavelength light source according to customers' requirements. We can make up the arbitrary single-wavelength and dual-wavelength light source into an integrated three-wavelength light source output and parameter index reference to dual-wavelength data. We can also provide product which output power is customer request. If you have any needs of purchasing optical light source from China, you can go to Ingellen.com to know more about our fiber optic light source categories or contact out sales directly by sales@ingellen.com.

SFP 10G SR – Cisco 10GBase-SR SFP+ Transceivers

SFP 10G SR is one of Cisco 10GBase SFP Plus transceivers that offer customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications. Ingellen is one of the main Cisco compatible transceivers manufacturers based in China, offers cost-effective standards-based Cisco 10GBase-SR SFP+ , SFP 10G SR with 100% Cisco compatible warranty and competitive prices.
The Cisco SFP-10G-SR module is a hot swappable fiber transceiver module designed for multi-mode fiber and operates at a nominal wavelength of 850nm. It works with 50 / 125 um MMF with max 300meters working spa. The SFP-10G-SR series multi-mode transceiver is SFP+ module for duplex optical data communications such as 10GBASE-SR and 10GBASE-SW. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C.
 
Features of SFP 10G SR
10GBASE-SR SFP+ 850nm 300m optical transceiver
High Quality with ISO9001, TUV, CE, FCC, UL and RoHS certificates
Factory New
Fully compatible with Cisco
Operating data rate up to 10.3Gbps
850nm VCSEL Transmitter
Distance up to 300m @50 / 125 um MMF
Single 3. 3V Power supply and TTL Logic Interface
Duplex LC Connector Interface, Hot Pluggable
All-metal housing for superior EMI performance
Compliant with MSA SFP+ Specification SFF-8431
 
SFP-10G-SR Specifications
Product Number: SFP-10G-SR
Product Name: Cisco 10GBase-SR SFP+
Form Factor: Plug-in module
Device Type: Transceiver module
Product Type: SFP+
Data Rate: 10Gbps
Wavelength: 850nm
Datarange: 300m
Connector Type: LC Duplex
Cable Type: Multi-Mode Fiber (MMF)
DDM: With DDM
Operating Temperature: Standard 0~70 °C
 
SFP 10G SR Applications
10GBASE-SR at 9.953Gbps
10GBASE-SW at 10.3125Gbps
1000 Base-SX Ethernet
8XFC at 8.5Gbps
4XFC at 4.25Gpbs
850nm VCSEL Transmitter
2XFC at 2.125Gpbs
1xFC at 1.0625Gbps
Duplex LC Connector Interface, Hot Pluggable
Other Optical Link
 
Except for SFP 10G SR, Ingellen also provide other Cisco 10GBase SFP plus modules like SFP 10G LR, SFP 10G ER, SFP 10G ZR. All of our Cisco SFP+ transceivers are tested in-house priority to shipment to guarantee they will work in perfect physical condition. Besides, since we are the original manufacturer of Cisco compatible transceivers and cables, we can supply these Cisco 10GBases SFP+ transceivers SFP 10G SR, LR, ER or ZR according to your requirements, and design labels and packaging for your company. If you have any inquiries about customized Cisco SFP plus modules, welcome to contact our sales manager by either email of Sales@ingellen.com or direct line of +86-755-8300 5057.

2012年11月9日星期五

Filter WDM Definition

Filter WDM device is a commonly heard item in the WDM fiber optic network solutions. Then what’s filter WDM or Filter Wavelength Division Multiplexer definition? Take this problem, this article will give a brief introduction of Filter WDM.

At the beginning, we need to know what WDM means. WDM or wavelength-division multiplexing refer to a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths of laser light. This technology is widely used in EDFA, Raman amplifiers, WDM networks and fiber optics instrumentation, applying to an optical carrier whereas frequency-division multiplexing typically applies to a radio carrier.

The Filter WDM or FWDM is a module based on environmentally stable TFF (Thin Film Filter) technology. FWDM filter combines or separates light at different wavelengths in a wide wavelength range, and offer very low insertion loss, low polarization dependence, high isolation and low temperature sensitivity and epoxy free optical path.

According to the different wavelength patterns, the WDM systems are devided into coarse CWDM, coarse wavelength-division multiplexing and DWDM, dense wavelength-division multiplexing. CWDM systems provide up to 8 channels in the 3rd transmission window (C-Band) of silica fibers around 1550 nm. DWDM uses the same transmission window but with denser channel spacing. WDM, DWDM and CWDM are based on the same concept of using multiple wavelengths of light on a single fiber, but differ in the spacing of the wavelengths, number of channels, and the ability to amplify the multiplexed signals in the optical space. EDFA provide an efficient wideband amplification for the C-band, Raman amplification adds a mechanism for amplification in the L-band. The C Band/L band filter wavelength division multiplexer is a micro optics device based on environmentally stable Thin Film Filters technology. It is used to combine or separate C band wavelength signals and L band wavelength signals in DWDM systems.

Basically, the FWDM Flitter series covers the following wavelength widows that widely used in optical fiber systems: 1310/1550nm for WDM or DWDM optical communications, 1480/1550nm for high-power DWDM optical amplifier/EDFA, 1510/1550nm for DWDM multi-channel optical networks, 980/1550nm for or high performance DWDM optical amplifier/EDFA and 1310/1490/1550nm for PON/FTTX/test instrument.

Basics of the Cisco GLC-T SFP Modules

In the fiber network, high speed connection is always needed to some type of equipment. As most high speed switches provide small form-factor GBIC slots, a variety of SFP transceivers are needed to handle with. The SFP Gigabit interface converter was developed by Cisco as the current standard. The Cisco compatible transceivers like Cisco GLC-T are used to plug into a Gigable Ethernet port or slot to link the port with the network, allowing for excellent data transmission rates between your Cisco equipments.

GLC-T SFP is a hot pluggable module with RJ45 interface, it is commonly used with 1000Base-T application, when a GLC-T transceiver is plugged into a standard SFP slot, the equipment generally auto detects the device and the hardware will work immediately when the media is connected. This 1000Base-T SFP transceiver supports1000 Mbps full duplex data-links with 5-level Pulse Amplitude Modulation (PAM) signals. All four pairs in the cable are used with symbol rate at 250Mbps on each pair. This GLC-T SFP is compliant to IEEE 802.3 and its dimension is 0.6 in x 2.8 in x 0.6 in.

Cisco SFP or Cisco compatible SPT is extremely preferred when shopping GBIC modules to make sure they are completely compatible with Cisco equipment. Many honest fiber optic manufacturers like Ingellen Technology Co. provide ranges of Cisco compatible SFP transceivers, The Cisco GLC-T SFPs are guaranteed to be 100% compatible with Cisco equipment and stable performance. The Cisco compatible GLC-T SFPs are widely used for the 1.25 Gigabit Ethernet over Cat 5 cable application and share the common features as below:

Up to 1.25Gb/s bi-directional data links
Hot-pluggable SFP footprint
Extended case temperature range (0°C to +85°C)
Fully metallic enclosure for low EMI
Low power dissipation (1.05 W typical)
Compact RJ-45 connector assembly
Access to physical layer IC via 2-wire serial bus
1000 BASE-T operation in host systems with SERDES interface
10/100/1000Mbps compliant in host systems with SGMII interface

Ingellen, among the reliable Cisco compatible transceivers, has a large quantity of Cisco GLC-T SFP transceivers in stock and ready to ship to you within 24 hours. All of our GLC-T transceivers are tested in-house prior to shipping to insure that they will arrive in perfect physical and working condition. We guarantee the GLC-T transceivers with high performance, cost effective and compliant with the Gigabit Ethernet and 1000- BASE-T standards to work well with your Cisco equipments.

2012年11月7日星期三

Types Of Fiber Patch Cables - Ingellen

Fiber Patch Cable is also called fiber jumper or fiber patch cord. Specifically, it is like joints used to join two kinds of optic cables or to make a third connection out. Fiber patch cable is mainly used in computer work station to outlet and fiber optic patch panels or optical cross connect distribution center. Choosing the right fiber optic patch cable means the compatibility of the patch cables with the original cable. It requires the rate of data transfer, the optic fiber mode, termination types, etc. must coincident with the original cables, otherwise, there will cause a delay or total information loss in the communication.?Know the different type of fiber optic patch cables is essential to choosing the right fiber patch cord for use. Next we will pay a priority to introducing the types of fiber patch cables:
Generally, fiber patch cables are categorized into different groups based on optical fiber mode, fiber cable type, termination types, connector polishing styles and fiber cable sizes. To specify this introduction, I will bring in fiber patch cable types from Ingellen.com for your reference.
According to Fiber Optic Mode
Single mode
Single mode fiber patch cables use 9/125 micron bulk single mode cable and single mode connectors at both ends. SM 9/125 Fiber Patch Cable from Ingellen is a typical single mode fiber patch cable. Jacket color of this kind of patch cable is usually yellow.
Multimode
Multimode fiber patch cables use 62.5/125 micron or 50/125 micron cable and are terminated with multimode optic connectors at both ends. OM1 62.5/125 Fiber Patch Cable, OM2 50/125 Fiber Patch Cable of Ingellen are two widely used multimode fiber patch cable. OM2 50/125 multimode fiber patch cables offer a lower insertion loss than OM1 62.5/125 fiber patch cords. The cable jacket is usually orange.
10G Multimode
10G fiber optic patch cables are specially designed 50/125 micron fiber optimized for 850nm VCSEL laser based 10Gig Ethernet. 10G fiber patch cable is rated for distances up to 300 meters using 850nm Vertical Cavity Surface Emitting Lasers (VCSEL). Ingellen provides 10G OM3 fiber patch cable that could work well with both VCSEL laser and LED sources and all of them are 100% optically tested for maximum performance. The cable jacket of this type is usually aqua.
According to the Fiber Cable Type
Simplex fiber patch cable
Simplex fiber patch cable means the patch cord has one single fiber and connector on each end. Ingellen fiber optic patch cable has simplex type for OM2 50/125, OM1 62.5/125 and 10G OM3 fiber patch cable.
Duplex fiber patch cable
Duplex fiber patch cable has two fibers and two connectors on each end. Just like Ingellen 10G OM3 Duplex Patch Cable, OM1 62.5/125 Duplex Patch Cable, OM2 50/125 Duplex Patch Cable and Zipcord Duplex Optical Fiber Patch Cable. Each fiber is marked "A" or "B" or different colored connector boots are used to mark polarity.
Ribbon fan-out cable assembly
For ribbon fan-out cable assembly, one end is ribbon fiber with multi fibers and one ribbon fiber connector such as MTP connector (12 fibers), the other end is multi simplex fiber cables with connectors such as ST, SC, LC, etc.
According to the Termination Types
Same connector types
Same connect type means the fiber optic connector on both end is same. Such as ST, SC, LC, FC, MU etc.
Hybrid connector types
Hybrid connector type means the fiber optic connector on each end of the fiber patch cable is different to each other. That is in one end it can be FC, the other end could be ST, SC, or LC etc. Just like FC/ST 10G OM3 Duplex Patch Cable, FC/SC 10G OM3 Duplex Patch Cable, FC/LC 10G OM3 Duplex Patch Cable.
According to Connector Polishing Styles
Fiber optic connectors are designed and polished to different shapes to minimize back reflection. This is particularly important in single mode applications. Typical back reflection grades are - 30dB, -40dB, -50dB and -60dB.
Ingellen provides Tight Buffer Optical Fiber Patch Cable, Loose Tube Optical Fiber Patch Cable and Zipcord Duplex Optical Fiber Patch Cable with different fiber cable jacketsize for your particular application.