Introduction
Optical Transceiver is a core photoelectric conversion accessory in the field of optical communication transmission. An Optical Transceiver usually consists of optical transmitter device (TOSA, including laser), optical receiver device (ROSA, including photo detector), functional circuits and optical (electrical) interfaces and other components. Optical Transceivers, as the carrier of transmission between the switch and the device, usually play the role of photoelectric conversion: the transmitter converts the electrical signal into an optical signal, which is transmitted through the optical fiber, and then the receiver converts the optical signal into an electrical signal. In addition to the common transceiver Optical Transceivers, Optical Transceivers are also based on the needs of some special scenarios and derived from a number of other structures, including single-receiver Optical Transceivers, dual-receiver Optical Transceivers tonal, single light-emitting modules and dual light-emitting modules and so on.
Optical Transceivers are mainly used to realize the electrical-optical conversion and optical-electrical conversion of signals at the transmitting end and receiving end, respectively, and are widely used. As the commercialization of the fifth generation of mobile communication technology continues to accelerate, the rate of Optical Transceivers continues to increase, the volume is also shrinking, so that every few years, a new packaging standards.
Common Optical Transceiver package type standard
1.GBIC
It is the gigabit interface converter. Before 2000, GBIC is the most popular Optical Transceiver package, but also the most widely used gigabit module form.
2.SFP
That is, small hot-swappable Optical Transceiver. It is half the size of a GBIC module and can be configured with more than double the number of ports on the same panel. In terms of functionality, there is little difference between the two, both support hot-swap.
3.XFP
Which is, 10 Gigabit SFP, using a XFI (10Gb serial interface) connected to a full-speed single-channel serial module, can replace the Xenpak and its derivatives.
4.SFP +
It and XFP is the same 10G Optical Transceiver. the size of the SFP + and SFP consistent, more compact than the XFP (reduced by about 30%), power consumption is also smaller (reduced some signal control functions).
5.QSFP
Four-channel SFP interface, according to the speed of the QSFP can be divided into 4 × 10G QSFP +, 4 × 25G QSFP28, 8 × 25G QSFP28-DD Optical Transceivers and so on.
6.QSFP-DD
The QSFP's 4-channel increased by a row of channels to 8-channel. It can be compatible with the QSFP program, the original QSFP28 module can still be used, just insert another module.
7.NRZ and PAM4
In the case of the same channel physical bandwidth, PAM4 transmits twice the amount of information equivalent to the NRZ signal, thus realizing the multiplication of the rate.
Conclusion
After reading the above content, you should have a preliminary understanding of different optical packaging formats. Basically, you can buy on our website. Of course, you can also contact our customer service for confirmation before purchasing.
