The Q8381/Q8382 is the ideal optical spectrum analyzer for use in spectrum and side mode ratio analysis for DFB laser diodes. At 0.5 nm and 1 nm from the peak wavelength, these analyzers provide a dynamic range of 50 dB and 40 dB, respectively. By connecting a preselector (
) to the Q8382, it is possible to achieve a dynamic range of 60 dB at 1 nm away and 50 dB at 0.5 nm away from the peak wavelength.
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