2.5 Gbps CMOS laser diode driver with APC and digitally controlled current modulation
Proceedings. IEEE Asia-Pacific Conference on ASIC, - Trang 77-80
Tóm tắt
This laser diode driver operates at 2.5 Gbps. It contains a driver, a reference voltage generator, an automatic power control circuit and digitally controlled blocks of bias current and modulation current. The TSMC 0.35 /spl mu/m 1P4M CMOS digital process is used to fabricate this chip. APC is used to maintain the laser diode output power and it works when photodetector gain ranges from 1/80 to 1/120. A dynamic pull-up and pull-down circuit of the output driver is used to improve the eye diagram. The experimental results demonstrate that it works at 2.5 Gbps and the APC digital control blocks of bias current and modulation current also work well.
Từ khóa
#Diode lasers #Digital control #Optical control #Digital modulation #Driver circuits #Power generation #Automatic control #Power control #Automatic generation control #Automatic voltage controlTài liệu tham khảo
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