OPTICAL SPECTRUM ANALYZER

Provided is an optical spectrum analyzer capable of stably measuring a spectrum of pulsed light while suppressing a decrease in a sweep speed. An A/D conversion unit 17 has a plurality of inputs to which the outputs of a plurality of amplifiers Amp21 to Amp2m are connected. A control unit 12 selects...

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Bibliographic Details
Main Authors YOSHINO, Hajime, UENO, Maki, MORIMOTO, Shinji
Format Patent
LanguageEnglish
Published 17.10.2024
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:Provided is an optical spectrum analyzer capable of stably measuring a spectrum of pulsed light while suppressing a decrease in a sweep speed. An A/D conversion unit 17 has a plurality of inputs to which the outputs of a plurality of amplifiers Amp21 to Amp2m are connected. A control unit 12 selects one of the plurality of amplifiers Amp21 to Amp2m whose output is not saturated based on optical power signals amplified by the plurality of amplifiers Amp21 to Amp2m. The control unit 12 sets an average value of the optical power signals sampled by the A/D conversion unit 17 and amplified by the selected one of the amplifiers Amp21 to Amp2m as the optical power signal of the next wavelength, while sweeping from the previous wavelength to the next wavelength is performed.
Bibliography:Application Number: US202418626486