40Gbit/s CFP optical module is hot-pluggable optical modules clients, including 40Gbit/s BASE-LR4 1310nm CWDM technology-based, single-mode fiber transmission distance up to 10km. Frequency interval based ITU-T G.694.2 specification, use the 1270,1290,1310 and 330nm 4 wavelengths, each wavelength channel rate is 10.3125Gbit/s. 40Gbit/s CFP optical module is a transmission mode in a single-mode optical fiber, to support 40Gbit/s Ethernet data rate transmission over four wavelengths in each wavelength 10.3125Gbit/s, and finally the use of WDM technology to four wavelengths of light composite signal transmitted over one single-mode fiber. 40Gbit/s CFP optical modules are mainly used in MAN, it can be converted into an electrical signal input optical signal output, in order to achieve long distance transmission, but also be able to receive the optical signal into an electrical signal output.

Many people do not know the difference between SFP and SFP+, so sometimes unnecessary trouble. 10G module has gone from 300Pin, XENPAK, X2, XFP development, and ultimately with the same size and SFP 10G transmission signal, which is the SFP+. SFP With its compact and low cost advantages to meet the equipment needs of high-density optical module, the standard introduced from 2002 to 2010 has replaced 10G XFP become the market mainstream.

Divided according to the rate of 155M / 622M / 1.25G / 2.125G / 4.25G / 8G / 10G, used more on the 155M and 1.25G market, 10G demand to increase positive attitude development.

SFP is SMALL FORM PLUGGABLE (Small Form Factor Pluggable) acronym, can be simply understood as an upgraded version of GBIC, SFP modules are small by half. But on the same panel configuration more than double the number of ports. Other features SFP and GBIC modules basically the same. Some switch vendors said the SFP module as small GBIC (MINI-GBIC).

Optical transceiver module can be based on package, application rate, transmission distance, the use of optical fiber, the use of laser wavelength and so do a variety of categories. We choose the optical module when these factors must be marked, do not misunderstand talent. For example, in a communication system used in the single-mode fiber optic module package 40 km 1550nm 2.5Gbps SFP module, or used in a data system in the 500 meters 10Gbps XFP package 850nm wavelength multimode fiber modules.

SFF (Small Form Factor), small package optical modules. Use of advanced precision optics and integrated circuit technology, size is only half of ordinary duplex SC (1X9) fiber optic transceiver modules, in the same space can be increased to double the number of ports of light, you can increase the line port density, lower per-port system costs.

XFP optical transceiver, is really just a photoelectric conversion device is only responsible for the completion of the optical / electrical conversion, other functions such as multiplexing / demultiplexing, 64B / 66B encoding and decoding is implemented by the chip on the circuit board. XFP optical module can easily achieve high port density applications.

According to the Ministry statistics, from January to June this year, the national new 1.386 million kilometers of optical cable, optical cable line total length of 18.838 million kilometers, an increase of 18.1%, 4G network to promote the rapid development of optical fiber and cable industry.

Optical communication is the physical basis of the entire Internet economy. The beginning of the century, the Internet bubble crisis, the optical communication industry closely related also suffered heavy losses, optical communications giant great loss of strength, Nortel, Lucent since almost brought to its knees. That time foreign optical communications giants are mostly vertically integrated development model, from device to device chips are able to completely independent research and design. After the bubble crisis, in order to preserve the core competitiveness, equipment manufacturers have stripped optical components businesses to form an independent company, or sold to independent manufacturers of optical devices, optical fiber business has been stripped. Optical Communication born light system equipment - fiber-optic cable - optical devices - optical chips complete industrial ecology.

It is well known in the optical communications optical module dominate, and photonic chip is the heart of the optical module is the core of the optical communication system. Photonic chip strength, represents a country, a company's optical communications technology. Therefore, when the industry proud, "Optical communication is a Chinese high-tech and advanced level in the gap in the world one of the smallest fields," when we need a critical analysis of this sentence.