Cost-effective equalization of electro-optic frequency combs in a Sagnac interferometer

We present a cost-effective electro-optic frequency comb generation and equalization method using a single phase modulator inserted in a Sagnac interferometer layout. The equalization relies on the interference of comb lines generated in both clockwise and counter-clockwise directions. Such a system...

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Bibliographic Details
Published inOptics express Vol. 31; no. 11; pp. 18356 - 18364
Main Authors Cardea, Ivan, Hu, Jianqi, Brès, Camille-Sophie
Format Journal Article
LanguageEnglish
Published United States 22.05.2023
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Summary:We present a cost-effective electro-optic frequency comb generation and equalization method using a single phase modulator inserted in a Sagnac interferometer layout. The equalization relies on the interference of comb lines generated in both clockwise and counter-clockwise directions. Such a system is capable of providing flat-top combs with flatness values comparable with other approaches proposed in literature, yet offering a simplified synthesis and reduced complexity. The frequency range of operation at hundreds of MHz renders this scheme particularly interesting for some sensing and spectroscopy applications.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.489232