Alcatel USA Marketing Inc. 9558H 用户手册

3EM23952AA

Issue 01, September 2009

UDS-117

GigE SFP

3-37

On the transmitter side, the GigE SFPs has an automatic optical output power 

control circuit, a laser driver and a laser diode module. The transmitter is 

based on a non-cooled DFB laser. The laser safety class for the complete 

integrated module is class 1 according to IEC 60825. It can manage commands 

for TX disable and provides a TX fault alarm.

TX fault indicates a laser fault. The transmitter is not disabled when the TX 

fault signal is active. TX disable is an input that is used to shut down the 

transmitter optical output.

On the receiver side, the GigE SFPs have a PIN photo detector for light-to-

electrical current conversion and a limiting amplifier. The photo-detected 

current is amplified by an electrical circuit that delivers two complementary 

data signals.

950-0001-1

072009

Optical cables

Transceiver CSM SFP module
Transceiver EAS SFP module

Input

Output