Time and fourier domain jointly mode locked frequency comb swept fiber laser

Minggui Wan, Feng Li, Xinhuan Feng, Xudong Wang, C. A.O. Yuan, Bai Ou Guan, Dongmei Huang, Jinhui Yuan, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

Fourier domain mode locked (FDML) fiber lasers enable megahertz wavelength sweeping rate but suffer from the short coherent length. Discretization of the swept spectrum by a comb filter was demonstrated effective to enhance the coherent length. In this paper, we propose a novel discretization method of the FDML signal with an intracavity intensity modulator. We propose and successfully demonstrate a time and Fourier domain jointly mode locked fiber laser with a Fabry-Pérot comb filter and an intensity modulator in the cavity. A 50 GHz free spectral range comb filter in the Fourier domain mode locked fiber swept laser slices the spectrum into a series of comb lines and chops the swept signal into short pulses in time domain. The temporal signal is detected by a photodetector to generate a series of ultrashort pulses to drive the intensity modulator to further polish the intracavity pulses. We experimentally realized the proposed time and Fourier domain jointly mode locked fiber laser. Discrete wavelength swept laser output with a wavelength spacing of ~0.4 nm in a 41 nm sweeping range has been achieved.
Original languageEnglish
Pages (from-to)32705-32712
Number of pages8
JournalOptics Express
Volume25
Issue number26
DOIs
Publication statusPublished - 25 Dec 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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