Time-Resolved Optical Spectrum Measurement of Multi-Mode Fabry-Perot Laser Diodes

Fabry-Perot (FP) laser diodes usually have multiple longitudinal modes. An optical spectrum analyzer (OSA) is able to measure the average power distribution of the mode structure but cannot detect the dynamics of mode competition which is the origin of the mode partition noise. We demonstrate a time...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 35; no. 1; pp. 11 - 14
Main Authors Hui, Rongqing, Akasaka, Youichi, Palacharla, Paparao
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Competition
Dynamic structural analysis
Electric power distribution
Fabry-Perot laser diode
Fiber lasers
Fiber optics
Laser modes
Measurement by laser beam
mode partition noise
optical communication
Optical fiber dispersion
Optical fibers
Optical variables measurement
relative intensity noise
Semiconductor lasers
Spectrum analysers
Waveforms
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Summary:Fabry-Perot (FP) laser diodes usually have multiple longitudinal modes. An optical spectrum analyzer (OSA) is able to measure the average power distribution of the mode structure but cannot detect the dynamics of mode competition which is the origin of the mode partition noise. We demonstrate a time-resolved optical spectrum measurement technique based on frequency-to-time conversion through time gating, chromatic dispersion, and real-time waveform sampling. This allows to investigate the dynamics of mode competition and correlation of relative intensity noises among different FP modes of the diode laser.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2022.3216751