What’s Fiber Optic Transceiver Module

Fiber optic transceiver definition:

Fiber optic transceiver is an important device in the optical fiber communication systems, which can be performed between the photoelectric signal conversion, with the receiving and transmitting functions. The fiber optic module is typically composed by the optoelectronic devices, the functional circuit and the optical interface, the optoelectronic device includes a transmitter and receiver in two parts.

Classification of fiber optic modules:
In accordance with the rate min: 100Base (Fast Ethernet applications), 1000Base (Gigabit) 10GESDH applications 155M, 622M, 2.5G, 10G.

According to the package: 1 × 9, SFF, SFP, GBIC, XENPAK, XFP, 1 × 9 package – welding optical module, the general speed is not higher than gigabit, most SC interface. SFF package – welding small package optical modules, general speed is not higher than gigabit, LC interface. SF (SmallFormFactor) small package optical modules using advanced precision optics and integrated circuit technology, size is only half of the ordinary duplex SC (1X9)-type optical transceiver module, doubling the number of optical ports in the same space. GBIC Package – hot-swappable Gigabit Interface optical module, SC connector. GBIC is the abbreviation of Giga Bitrate Interface Converter. The interface devices that convert Gigabit electrical signals to optical signals. SFP package – hot-plug small package module, currently the highest data rate of up to 4G, the use of LC interface, SFP can be considered as an upgraded version of GBIC. XENPAK package for Gigabit Ethernet application, using SC interface, XFP package – 10G optical modules that can be used in Gigabit Ethernet, SONET and other systems, with LC interface.

Main parameters of the fiber optic transceiver:
TxLOP: Optical Average Power: average transmission optical power refers to the signal logic of 1 of the light power and the arithmetic mean value of 0 of the light power. P0 + P1 PAVG = 2 (dBm).
ER: Extinction Ratio: signal logic as 1 when the light power is 0 when the optical power of the size of the ratio of the calculation formula as: P1ER = 10log P0 (dB) of ER represents the extinction ratio, dB, P1 of and P0 respectively represent the logic 1 and 0 when the optical power.

Receiver Sensitivity: to measure minimum average optical power received by the receiving side is required to guarantee a certain bit error rate (1 × 10exp (-12)), in units of dBm. Error rate refers to the longer period of time, after The error symbol number and error detector output terminal received in the receiving side of the photoelectric conversion ratio of the number of symbols is given.

LOS Assert and LOS Dessert: The receiver output to an electrical signal, the the potential height reflects received by the receiver of the light signal intensity is sufficient, this potential with a preset potential in order to determine the light whether the signal is lost. potential comparison using a comparator with hysteresis effect to achieve, usually as by default the optical power of the electrical signal corresponding instructions, in units of dBm.

EMM: Eye Mask Margin: means eye amplitude in the optimum sampling point. “Open” the extent of the degree of opening of the eye diagram of the distortion-free should be 100 [[%]] The eye diagram template tolerance refers to the eye diagram template expansion, until the eye diagram of the sampling point to enter to the expansion of the region the template’s largest expansion percentage.

Ingellen Technology supplies a complete range of fiber optic network transceiver modules, well come to www.ingellen.com.

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