Optical power monitoring device, laser device, and laser system
Abstract:
An optical power monitoring device that monitors power of input light reflected back into an optical fiber among output light output from the optical fiber, the optical power monitoring device includes: a photodetector disposed by the optical fiber that detects Rayleigh scattered light generated by the input light and the output light that are guided by the optical fiber; and a calculator that performs a calculation to exclude a component that corresponds to an output of the output light detected by the photodetector using first information that indicates a relationship between an output of the output light obtained in advance under a condition where the output light is not reflected and the output of the output light detected by the photodetector.
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