Laser linewidth measurement based on long and short delay fiber combination
We present a numerical calculation with iterative algorithm method for accurately measuring laser linewidth. In this new method, the self-heterodyne spectrum of long delay fiber is calculated as the initial value, and the short delay self-heterodyne spectrum is demodulated with iterative algorithm t...
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Veröffentlicht in: | Optics express 2021-08, Vol.29 (17), p.27118-27126 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | We present a numerical calculation with iterative algorithm method for accurately measuring laser linewidth. In this new method, the self-heterodyne spectrum of long delay fiber is calculated as the initial value, and the short delay self-heterodyne spectrum is demodulated with iterative algorithm to realize the accurate measurement of laser linewidth. The method can eliminate the influence of 1/f noise on the measurement spectrum broadening, so it provides a powerful way for accurate measurement of narrow linewidth. |
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ISSN: | 1094-4087 1094-4087 |
DOI: | 10.1364/OE.428787 |