Cascaded SSB comb generation using injection-locked seed lasers

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate a novel concept of cascaded single side band (SSB) comb generation for improving the carrier-to-noise ratio (CNR), which degrades when the bandwidth of the SSB comb becomes wider. Wavelength-multiplexed seed lasers are simultaneously modulated in a recirculating frequency shifter loop with an SSB modulator, an Er-doped fiber amplifier, and a fiber Bragg grating whose reflective notch filter nature enables seed lasers to be synchronized through the injection locking (IL). A maximum CNR improvement of 11.3 dB is experimentally demonstrated under the IL condition. The proposed technique effectively improves the CNR of wide-bandwidth SSB combs.

Original languageEnglish
Pages (from-to)769-772
Number of pages4
JournalOptics Letters
Volume46
Issue number4
DOIs
Publication statusPublished - 2021 Feb 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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