| 摘要 |
A parallel optical module is constructed to include a plurality of photodetectors (MD 1 , MD 2 ) which detect output lights of a plurality of arbitrary channels of a laser light source ( 3 ) having a plurality of channels, a plurality of detection and control loops which detect and control intensities of output lights of the laser light source based on detection signals from the plurality of photodetectors, and a control circuit ( 1 ) which stops output of the laser light source when an intensity of output light detected by at least one of the plurality of detection and control loops does not satisfy a predetermined standard.
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