Passive mode locking at harmonics of the free spectral range of the intracavity filter in a fiber ring laser

Shumin Zhang, Fuyun Lu, Xinyong Dong, Ping Shum, Xiufeng Yang, Xiaoqun Zhou, Yandong Gongand, Chao Lu

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61 Citations (Scopus)


We report the passive mode-locking at harmonics of the free spectral range (FSR) of the intracavity multichannel filter in a fiber ring laser. The laser uses a sampled fiber Bragg grating (SFBG) with a free spectral range (FSR) of 0.8 nm, or 99 GHz at 1555 nm, and a length of highly nonlinear photonic crystal fiber with low and flat dispersion. Stable picosecond soliton pulse trains with twofold to sevenfold enhancement in the repetition rate, relative to the FSR of the SFBG, have been achieved. The passive mode-locking mechanism that is at play in this laser relies on a dissipative four-wave mixing process and switching of repetition rate is realized simply by adjustment of the intracavity polarization controllers.
Original languageEnglish
Pages (from-to)2852-2854
Number of pages3
JournalOptics Letters
Issue number21
Publication statusPublished - 1 Nov 2005
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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