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A Laser Diode Driving Board with Precise Temperature Control Circuit for MDI-QKD Experiment

Hao Min, Wei Li,Xiao Jiang

ICOSM 2020 OPTOELECTRONIC SCIENCE AND MATERIALS（2020）

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Abstract
We present a laser board for quantum communication, which integrates a high-speed driving signal for laser diode (LD) and a temperature control circuit. Our laser pulses maintain a signal-to-noise ratio of more than 30dB at a frequency up to 1.25GHz. And the temperature noise of the controlled laser diode less than 1mK RMS within 1hour.
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Key words
temperature control,laser driving,QKD
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