As the improvement of fiber optic technologies, 10G Ethernet products are coming to fit the increasing demand for bandwidth. SFP plus is the 10G fiber optic transceiver which used for 10G Ethernet and other high speed transmissions. SFP+ is with much higher data rate and latest industrial standards. SFP+ is more compact size compared with the former 10G transceivers X2 and Xenpak, it has greater ability for density installations.

Several standards for SFP+ has been released for 10Gpbs networks, including 10GBase-SR, 10GBase-LR and 10GBase-LRM. 10GBase-SR is for OM3 multimode optical fiber, relevant SFP plus working distance 300 meters max. 10GBase-LR is for single mode optical fiber, relevant SFP plus working distance 10km. 10GBase-LRM is for FDDI multimode fiber, the SFP plus working distance 220 meters.

Main features of Cisco 10GBASE SFP:
Smallest 10G form factor;
Supports 10GBASE Ethernet and OTU2/OTU2e;
Hot-swappable input/output device that plugs into an Ethernet SFP+ port of a Cisco switch;
Provides flexibility of interface choice;
Supports "pay-as-you-populate" model;
Supports digital optical monitoring capability;
Supports the Cisco quality identification feature that enables a Cisco switch to identify whether the module is certified and tested by Cisco;
Optical interoperability with 10GBASE XENPAK, 10GBASE X2, and 10GBASE XFP interfaces on the same link.

Cisco SFP 10G SR is a hot fiber SFP+ transceiver module for multimode fiber links, it is 10GBase SR compliant and work at 850nm used for 10Gigabit applications, this transceiver is in standards SFP+ package to plug into the ports or slots on Cisco equipment, optical interface is duplex LC connector. It is complete compatible with IEEE 802.3ae 10Gbase-SR. Electrical interface of the SFP+ SR is compliant to SFF-8431. SFP 10G SR features low power consumption and it supports multi-rate from 2G fiber channel to 10G Ethernet, its max working distance is 300 meters over multimode optical fiber. When use 2000MHz*km MMF (OM3), 10Gbase-SR up to 300m link lengths are possible. When use 4700MHz*km MMF (OM4), up to 400m link lengths are possible.

Cisco Transceiver Modules support Ethernet, Sonet/SDH and Fibre Channel applications across all Cisco switching and routing platforms. Cisco GBIC transceiver can be interchanged on a wide variety of Cisco products and can be intermixed in combinations of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, or 1000BASE-CWDM interfaces on a port-by-port basis.

SFP+ is the upgrade virsion of SFP transceiver that used for 10G Ethernet network. Practically Cisco device can only work with Cisco compatible transceivers like Cisco SFP+ or Cisco SFP transceiver, which supports the Cisco Quality Identification (ID) features and allows a Cisco switch or router to identify and validate the transceiver module that is certified and tested by Cisco.

 The small form-factor pluggable (SFP) is a compact, hot-pluggable transceiver used for both telecommunication and data communication applications. These modules are designed to support SONET, Gigabit Ethernet, Fibre Channel, and other communications standards. SFP module makes the fiber optic network or fiber-Ethernet network easier to upgrade or maintain. Because SFP modules can be easily interchanged, electro-optical or fiber optic networks can be upgraded and maintained more conveniently than has been the case with traditional soldered-in modules. Rather than replacing an entire circuit board containing several soldered-in modules, a single module can be removed and replaced for repair or upgrading. This can result in a substantial cost savings, both in maintenance and in upgrading efforts.

SFP structurer:
SFP transceiver has two ends, one is an optical cable plugs into and another for connecting an electrical device. The form factor and electrical interface are specified by a multi-source agreement(MSA). It interfaces a network device motherboard (for a switch, router, media converter or similar device) to a fiber optic or copper networking cable.

SFP Features:
Compliant with SFP MSA;
Compliant with IUT-T G.957 and G.958;
Compliant with Industry Standard RFT Electrical Connector and Cage;
100Ω Differential AC coupled PECL Outputs;
Single 3.3V Power supply and TTL Logic Interface;
Various kinds SFP with different working wavelength and distance;
Extended Operating Temperature Range(0℃~70℃);
Hot Pluggable;
EEPROM with Serial ID functionality;
LC Connector Interface;
Low EMI and Low power dissipation;
Class 1 Laser Product Compliant with the Requirements of IEC 60825-1 and IEC 60825-2.

SFP and GBIC Compare
Unlike gigabit interface converter (GBIC) with SC fiber optic interfaces, SFP is with LC interface and the main body size of SFP is only about half of GBIC transceiver, which makes SFP space saving. Signal transmitting rate of these modules range from 100Mbps up to 4Gbps or more, working distance of these SFP transceiver modules can be from 500 meters to 100 kilo meters, working wavelength of different SFP modules are typically 850nm, 1310nm and 1550nm.

Ingellen, a direct fiber optic manufacturer, offers a range of SFP transceivers and GBIC transceivers for Gigabit Ethernet and Fibre Channel appications. These small, modular optical interface transceivers offer a convenient and cost effective solution for the adoption of Gigabit Ethernet and Fibre Channel in data center, campus, metropolitan area access and ring networks, and storage area networks. Ingellen supplys SFP transceiver modules, CISCO SFP fiber optic transceiver,GLC-SX-MM,GLC-LH-SM,GLC-ZX-SM,GLC-T, CWDM SFP,2G,4G,10G, etc, many types with good price and excellent quality. All of these transceivers are certified 100% compliant for all Cisco switch and router product lines.

 The SFP (Small Form-Factor Pluggable) transceiver modules are hot-pluggable I/O devices that plug into module sockets. The transceiver connects the electrical circuitry of the module with the optical or copper network. GBIC transceiver, short name for the Gigabit Interface Converter, is a media conversion device between Gigabit Ethernet and fiber optic networks. Via the GBIC transceiver, Gigabit network equipment can directly connect to copper wires, single mode fiber ports or multimode fiber ports. Cisco SFP can be regarded as the upgrade version GBIC. Unlike GBIC with SC fiber optic interfaces, cisco SFP is with LC interface. Moreover, its main body size of SFP is only about half of GBIC, which makes SFP space saving.

Cisco pluggable transceivers offer a convenient and cost effective solution for the adoption in data centers, campuses, metropolitan area access and ring networks, and storage area networks. Users can replace a single SFP module during the process instead of replace the whole board with many modules on it. Cisco Transceiver Modules support Ethernet, Sonet/SDH and Fibre Channel applications across all Cisco switching and routing platforms. The Cisco SFP transceiver is defined by a multi source agreement between some manufacturers in the industry.

Cisco SFP fiber optic transceivers, which include Cisco GLC-T SFP, Cisco CWDM SFP, Cisco DWDM SFP, Cisco Copper SFP and Cisco Bidi SFP. Cisco GLC T SFP transceiver is a hot pluggable module use RJ45 interface, it is compliant to IEEE 802.3 and its dimension is 0.6 in x 2.8 in x 0.6 in, GLC T is with plug in module type Mini-GBIC.

GLC T is 1000Base SFP fiber optic transceiver module via Category 5 copper line, Cisco GLC T fiber transceiver provide 1Gbps data transfer and it provides full-duplex Gigabit Ethernet connectivity to high-end workstations and between wiring closets over existing copper network infrastructure. The GLC T SFP transceiver provides standard serial ID information compliant with SFP MSA, which can be accessed with address of A0h via the 2wire serial CMOS EEPROM protocol. The physical IC can also be accessed via 2wire serial bus at address A0h.

GLC T SFP Features:
Up to 1.25Gb/s bi-directional data links;
Hot-pluggable SFP footprint;
Extended case temperature range (0°C to +70°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, a manufacturer supplies a various kinds of fiber optic products, has different SFP transceivers with Cisco compatible for fast Ethernet and Gigabit Ethernet, SFP,Cisco,GLC SX MM,GLC T,GLC ZX SM,GLC BX U,GLC BX D,CWDM DWDM and so on. Our Cisco SFP equivalent products are manufactured and tested strictly according to industrial standards, they are compatible to use with equipment from other companies including Cisco. We supply the SFP fiber optic transceiver modules with good price, excellent compatibility and fast delivery.

 We all understand the fiber optic pigtail has a interface, its connecting the optical fiber and the optical fiber coupler of a similar half of the patch connector, it comprises a patch connector and a fiber. They are different of pigtail and patch cable, the patch cable has a variety of different interfaces and require different coupler, the patch cable can divied into two to be used as a pigtail.

There are many kinds of fiber optic pigtail

1.According to the transfer mode, it can be divied into Single-mode (sheath color is generally yellow) and Multi-mode (jacket color is generally orange), of course, there will be other colors, but most of this color.

2.According to the connector, there are SC, LC, FC connector is more commonly used, such as ST, MTRI, MU with a small range. The SC fiber optic pigtail connectors are compliant to IEC, TIA/EIA, NTT and JIS specifications. It is with one piece construction and pulls proof design. SC is low cost but high performance, which makes it one of the most popular cables.

The LC fiber optic pigtail connectors feature the RJ-45 style interface with low insertion loss and low back reflection; it is with high precision alignment and is widely used all over the world. It is with zirconia ceramic ferrule. The same time, the LC pigtail switch can be connected directly, without a coupler, When pigtail Connect one end of the cable, if you need to protect should be used in terminal box, and the terminal box the best selection out pigtails box directly.

The FC fiber optic pigtail connector is compliant to IEC, TIA/EIA, NTT and JIS specifications. The FC connector is with PC, UPC, APC versions. Both single mode and multimode versions come with a zirconia ceramic ferrule.

The ST fiber optic pigtail connector is with metal outer body and with a long spring loaded ferrule hold the optical fiber. ST Cable can be 9/125 single mode or 50/125 multimode or 62.5/125 multimode. ST fiber pigtails connector ferrule interface can be PC, UPC or APC.

The MU fiber optic pigtail connector is NTT and JIS compliant. It is with tunable zirconia connector ferrule and features the small size, optical and mechanism performance is similar as the SC. This pigtail has zirconia ceramic ferrule.

The MTRJ fiber optic pigtail cable end is made of a duplex precision molded MT feruled connector. The MTRJ is with duplex plastic ferrule and compliant to TIA/EIA 568-A. MTRJ is a plastic ferrule connector pigtail.

3. According to the end face type, it can be divided into UPC and APC.

Typical applications of fiber pigtail is to link the fiber optic cable with fiber optic equipment, the fiber optic pigtail with connector side is used to link the equipment, while the other side of the pigtail is melted together with the fiber cable, by melting together the fiber glasses, it can reach a minimum insertion loss. Common types of fiber optic pigtails are usually with 0.9mm fiber cable diameter, and usually installed inside ODF unit. most commonly used types are SC fiber optic pigtail, ST fiber optic pigtail,FC fiber optic pigail, LC fiber optic pigtail ,MT-RJ fiber optic pigtail,SC/APC fiber optic pigtail, FC/APC fiber optic pigtail and E2000 fiber optic pigtail.

As the leading fiber optic products manufacturer, Ingellen also offer the waterproof fiber optic pigtail, they are produced strictly according to IEC standards, the products feature low insertion loss, high return loss, good interchangeability and repeat push-pull performance, which make them easy to use. The waterproof fiber optic pigtails are with strong jacket and waterproof sealed head connectors; they can be used in harsh environment, all of which are with best prices and guaranteed qualities.

 SFP(Small Form-Factor Pluggable Plus) fiber transceiver modules make the fiber optic network or fiber-Ethernet network easier to upgrade or maintain, users can replace a single SFP module during the process instead of replace the whole board with many modules on it. SFP transceivers are different types working with different wavelength for various kinds of distances. SX SFP use 850nm for max 550 meters, LX SFP use 1310nm for max 10km, ZX SFP could reach 80km. There is also copper SFP that use a RJ45 interface. DOM function for SFP is optional, it help users detect real time SFP working status SFP puls transceiver is an innovative, next-generation transceiver module.

Cisco SFP is also hot plugable, it is an upgraded version fiber optic transceiver, it represents the trend to be smaller and more flexibility. Cisco SFP includes a wide range of the transceivers with different working wavelength and distance. In the following list I will introduce you some information about GLC SX MM Transceiver and GLC LH SM Transceiver.

GLC SX MM Transceiver
GLC SX MM is 1000Base-SX SFP fiber optic transceiver for multimode fiber and it works at 850nm wavelength. GLC SX MM SFP is hot swappable module that fit for Gigabit Ethernet port or slot and link the port with the network, whose interface is dual LC for optical. GLC SX MM is about 1.3 cm x 5.7 cm x 0.9 cm in dimension, and 75g in weight. The GLC SX MM transceivers are compatible with SFP Multi-Source Agreement (MSA), 1000Base SX standard for Gigabit Ethernet and SFF-8472.

The GLC SX MM transceiver consists of three sections: a VCSEL laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The GLC SX MM SFP transceivers are high performance, cost effective modules supporting data-rate of 1.25Gbps and 550m transmission distance with MMF.

GLC LH SM Transceiver
GLC LH SM is a SFP fiber optic transceiver working at 1300nm wavelength, GLC LH SM is suit for both multimode optical fiber and single mode optical fiber, it is small size transceiver with LC interface and it is hot swappable, easy to use, no need further configuration. GLC LH SM is used in Gigabit network and its max working distance is 10km over SMF or 550meters over MMF, data transfer rate at 1Gbps and it works based on IEEE 802.3z standards.

The GLC LH SM transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.

SFP fiber optic transceivers are upgraded version of its former GBIC transceivers, Cisco SFP transceiver adopt LC interface and its size is only about half of GBIC, thus Cisco SFP fiber transceivers fit for dense installations.