| 摘要 |
<p>Provided is a signal detection device for a photoreceiver. The signal detection device comprises an OA, a Demux, N+1 photoelectric converters, and N voltage comparators, wherein the OA amplifies received wavelength division multiplexing (WDM) signals to generate first optical signals, the WDM signals being generated by multiplexing N paths of single-wavelength optical signals; the Demux separates N paths of single-wavelength optical signals and one path of noise optical signal from the first optical signals, and the Demux respectively outputs the N paths of single-wavelength optical signals from N single-wavelength optical signal output ports and outputs the one path of noise optical signal from one noise optical signal output port; the N+1 photoelectric converters respectively convert the N paths of single-wavelength optical signals and the one path of noise optical signal into N paths of available voltage signals and one path of noise voltage signal; and reference pins of all voltage comparators receive the noise voltage signal, and sampling pins of all the voltage comparators respectively receive the N paths of available voltage signals. Also provided are a detection method and system. By means of the present invention, the incorrect triggering of a photoreceiver can be effectively prevented.</p> |
