| 摘要 |
<p>Optical receivers in optical communication systems should have a great dynamic range, since the receiver should be able to process optical signals whose levels may vary widely depending on the location of the receiver. According to the invention, an optical amplifier, particularly a fiber amplifier, is provided through which the incoming optical signal passes before entering the transducer proper and whose gain or attenuation factor us controlled in accordance with the electric output signal of the transducer.</p> |
