What is fiber optic transceiver
Fiber optical transceiver module is composed of optoelectronic devices,functional circuitry and optical interface etc.The optoelectronic devices include transceiver and receiving two parts.
Transceiver part is: input a certain rate of signal by the internal driver chip to drive the Semiconductor lasers(LD)or the light emitting diode(LED) emits the corresponding rate of modulated optical signal.And the transceiver part can make the power of output optical signal stability because of its internal light power automatic control circuit.
Receiving part is: after a certain rate of the optical signal inputed to the optical module,the optical signal will be converted to electrical signal by the optical detection Diode. Then output the corresponding bit rate signal through the pre-amplifier. The output signal generally is PECL power Level. While the input optical power less than a certain value will output the awarning signal .
Classification of fiber optic transceiver
Divided by rate:
Ethernet applications 100Base, 1000Base (Gigabit), 10GE
SDH applications, 155M, 622M, 2.5G, 10G
According to package sub: 1 × 9, SFF, SFP, GBIC, XENPAK, XFP
1 × 9 package - welding optical module, the general rate is not higher than gigabit, multi-use SC connectors
SFF package - welding small package optical modules, generally no higher than gigabit speeds,use of LC interface
GBIC package - hot-swappable Gigabit Interface optical module, with SC Interface
SFP package - hot little package module, the highest data rate of up to 4G, LC interfaceto use more
XFP package - 10G optical modules used in Gigabit Ethernet, SONET and others ystems, with LC interface
According to the type of laser : LED, VCSEL, FP LD, DFB LD
Divided by the emission wavelength: 850nm, 1310nm, 1550nm, etc.
Divided according to use: Non-Hot Plug (1 × 9, SFF), hot-pluggable (GBIC, SFP, XENPAK, XFP)
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