Abstract
A simple laser-wavelength detection method is presented based on time-domain signal analysis using a continuously tunable, wide-band synchro-scanned optical disk filter. A differential signal is defined between two light powers monitored ground the time corresponding to the laser wavelength of interest to detect the slight wavelength deviation. A maximum detection accuracy of /spl plusmn/100 MHz has been achieved using a filter with a 3-dB width of 0.83 nm.
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