| 摘要 |
An amplification circuit used in an optical communication apparatus includes a first amplifier for generating a first voltage signal corresponding to an input current, a second amplifier for amplifying the first voltage signal and generating a second voltage signal, a gain control circuit for generating a gain control signal for adjusting the gain of the first amplifier based on the second voltage signal, and a bias control circuit for generating a bias control signal for adjusting the bias current at the output of the first amplifier based on the gain control signal. The bias control signal stabilizes the bias voltage of the first amplifier during gain adjustment of the first amplifier.
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