NDLI: A 3.8-Gb/s CMOS Laser Driver with Automatic Power Control Using Thermistors

Content Provider	IEEE Xplore Digital Library
Author	Day-Uei Li Wen-Hui Chen Long-Xi Chang Chueh-Hao Yu
Copyright Year	2007
Description	Author affiliation: SoC Technol. Center, Ind. Technol. Res. Inst., Hsinchu (Day-Uei Li; Wen-Hui Chen; Long-Xi Chang; Chueh-Hao Yu)
Abstract	A 3.8-Gb/s laser driver with automatic power control (APC) using thermistors is presented. The chip was fabricated in 0.25mum 1P5M CMOS process. With a waveform shaping circuit, the driver could generate a 5mA to 60mA modulation current with its duty cycle maintained at 50%. A modified MUX circuit is also introduced to improve the jitter performance of both the direct and latched data output. And with a thermistor-APC compensation circuit, the laser power could be maintained within a temperature range from -30 degC to 80degC without using any monitor photodiode. Measurements on mounted chips show clear electrical eye diagrams operating over 3.8-Gb/s data rate with typical rise/fall times (20% to 80%) of 104/109ps. Moreover, an optical eye diagram is also demonstrated by connecting the driver with a 2.5-Gb/s 1310nm laser diode.
Starting Page	2546
Ending Page	2549
File Size	1172906
Page Count	4
File Format	PDF
ISBN	1424409209
DOI	10.1109/ISCAS.2007.377834
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power lasers Power control Thermistors Driver circuits CMOS process Jitter Temperature distribution Monitoring Photodiodes Electric variables measurement
Content Type	Text
Resource Type	Article

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