Optical frequency comb noise spectra analysis using an asymmetric fiber delay line interferometer

A simple and practical apparatus enabling repetition rate (frep) noise, carrier-envelope frequency (fceo) noise and n optical comb mode (νn) noise spectra measurements with high precision is established. The frep and νn noise spectra are measured by a fiber delay line interferometer, while fceo nois...

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Published inOptics express Vol. 28; no. 7; pp. 9232 - 9243
Main Authors Tian, Haochen, Yang, Wenkai, Kwon, Dohyeon, Li, Runmin, Zhao, Yuwei, Kim, Jungwon, Song, Youjian, Hu, Minglie
Format Journal Article
LanguageEnglish
Published United States 30.03.2020
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Summary:A simple and practical apparatus enabling repetition rate (frep) noise, carrier-envelope frequency (fceo) noise and n optical comb mode (νn) noise spectra measurements with high precision is established. The frep and νn noise spectra are measured by a fiber delay line interferometer, while fceo noise spectrum is measured by an f-2f interferometer. We utilize this apparatus to characterize the noise performance of an Er-fiber optical frequency comb (OFC) and analyze the origin of dominant noise sources. Moreover, this apparatus provides a powerful tool for diagnosing noise dynamics intrinsic in mode-locked lasers and OFCs. To this end, we uncover the anti-correlation between frep and fceo noise as well as the impact of servo loops on noise characteristics in the stabilized OFC.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.386231