Optical circuits for optical amplifierinput and output stages are described.
描述了光学放大器的输入和输出级的光路。
2
Output noise may be reduced in both circuits by bypassing the amplifierinput.
如果想减小输出噪声，可以在上述电路的输入端采取旁路措施。
3
The amplifierinput is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.