| A 155 Mbps laser diode driver with automatic power and extinction ratio control |
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| 作者姓名： | CHEN Xiao-fei ZOU Xue-cheng LIN Shuang-xi LIU Zheng-lin JIN Hai |
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| 作者单位： | CHEN Xiao-fei1，3，ZOU Xue-cheng1，LIN Shuang-xi2，LIU Zheng-lin1，JIN Hai3 (1Department of Electronic Science and Technology，Huazhong University of Science and Technology，Wuhan 430074，China) (2School of Electric and Information Engineering，Wuhan Institute of Technology，Wuhan 430073，China) (3Cluster and Grid Computing Laboratory，Huazhong University of Science and Technology，Wuhan 430074，China) |
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| 基金项目： | Project （No. 2006AA01Z226） supported by the Hi-Tech Researchand Development Program （863） of China |
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| 摘 要： | An integrated laser diode driver(LDD) driving an edge-emitting laser diode was designed and fabricated by 0.35 μm BiCMOS technology. This paper proposes a scheme which combines the automatic power control loop and temperature com-pensation for modulation current in order to maintain constant extinction ratio and average optical power. To implement tem-perature compensation for modulation current,a novel circuit which generates a PTAT current by using the injecting base current of a bipolar transistor in saturation region,and alternates the amplifier feedback loop(closed or not) to control the state of the current path is presented. Simulation results showed that programmed by choice of external resistors,the IC can provide modu-lation current from 5 mA to 85 mA with temperature compensation adjustments and independent bias current from 4 mA to 100 mA. Optical test results showed that clear eye-diagrams can be obtained at 155 Mbps,with the output optical power being nearly constant,and the variation of extinction ratio being lower than 0.7 dB.
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| 关 键 词： | 激光器二极管 自动功率控制 消光系数 温度补偿 |
| 收稿时间： | 27 December 2006 |
| 修稿时间： | 2006-12-272007-04-03 |
A 155 Mbps laser diode driver with automatic power and extinction ratio control |
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| CHEN Xiao-fei ZOU Xue-cheng LIN Shuang-xi LIU Zheng-lin JIN Hai.A 155 Mbps laser diode driver with automatic power and extinction ratio control[J].Journal of Zhejiang University Science,2007,8(8):1346-1350. |
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| Authors: | Chen Xiao-fei Zou Xue-cheng Lin Shuang-xi Liu Zheng-lin Jin Hai |
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| Institution: | (1) Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China;(2) School of Electric and Information Engineering, Wuhan Institute of Technology, Wuhan, 430073, China;(3) Cluster and Grid Computing Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, China |
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| Abstract: | An integrated laser diode driver (LDD) driving an edge-emitting laser diode was designed and fabricated by 0.35 μm BiCMOS
technology. This paper proposes a scheme which combines the automatic power control loop and temperature compensation for
modulation current in order to maintain constant extinction ratio and average optical power. To implement temperature compensation
for modulation current, a novel circuit which generates a PTAT current by using the injecting base current of a bipolar transistor
in saturation region, and alternates the amplifier feedback loop (closed or not) to control the state of the current path
is presented. Simulation results showed that programmed by choice of external resistors, the IC can provide modulation current
from 5 mA to 85 mA with temperature compensation adjustments and independent bias current from 4 mA to 100 mA. Optical test
results showed that clear eye-diagrams can be obtained at 155 Mbps, with the output optical power being nearly constant, and
the variation of extinction ratio being lower than 0.7 dB.
Project (No. 2006AA01Z226) supported by the Hi-Tech Research and Development Program (863) of China |
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| Keywords: | Laser diode driver (LDD) Automatic power control (APC) Extinction ratio Temperature compensation |
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