Patent ID: 8340525
Filing Date: 2012-12-25
Classification: H04B

Abstract:
1. A device for stabilizing multi-channel optical signal wavelengths, comprising: a signal generator, configured to generate a first detecting signal, wherein a frequency band of the first detecting signal is different from that of a plurality of driving signals, and the plurality of driving signals are configured to drive lasers to generate a plurality of optical signals; a laser modulation drive and control circuit unit, configured to stack the first detecting signal on the plurality of driving signals in sequence; a wavelength detector, configured to detect wavelengths of the plurality of optical signals to output a voltage signal in which the output voltage signal carries component of the first detecting signal, wherein as for the optical signal of each wavelength the output voltage is a monotone function of the wavelength within corresponding wavelength interval; a signal extractor, configured to extract a second detecting signal from the signal output from the wavelength detector in sequence, wherein a frequency band of the second detecting signal is the same as that of the first detecting signal; and a control unit, configured to control a sequence for stacking the first detecting signal on the plurality of driving signals and a signal extracting sequence of the signal extractor, and control the wavelengths of the optical signals generated by the lasers according to the received second detecting signal.