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Author: search.filters.author.Lai, YinchiehSubject: search.filters.subject.Fiber lasers

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Now showing 1 - 3 of 3
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    Bound Soliton Fiber Laser Mode-Locking Without Saturable Absorption Effect
    (2016-08-01)
    Luo, Cheng-Jhih
    ;
    Wang, Sheng-Min
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    ;
    光電工程研究所
    Stable bound soliton laser mode-locking is experimentally demonstrated in an environmentally stable hybrid mode-locked Er-doped fiber laser without incorporating (equivalent) nonlinear saturable absorption effects. The laser has a sigma-type cavity and exhibits a higher threshold for single to bound soliton mode-locking state transition. A nonlinear eigenstate analysis based on the master equation model and the concept of steady-state lasing gain is developed to more physically explain the observed mode-locking state transition phenomena.
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    250-GHz Passive Harmonic Mode-Locked Er-Doped Fiber Laser by Dissipative Four-Wave Mixing With Silicon-Based Micro-Ring
    (2013-10-01)
    Jyu, Siao-Shan
    ;
    Yang, Ling-Gang
    ;
    Wong, Chi-Yan
    ;
    Yeh, Chien-Hung
    ;
    Chow, Chi-Wai
    We propose and demonstrate a 250-GHz high-repetition-rate mode-locked Er-doped fiber laser, which utilizes a silicon micro-ring resonator (SMRR). The SMRR acts as an optical comb filter to help achieve passive mode-locking through the dissipative four-wave-mixing effect induced by a piece of high nonlinear fiber. A short section of polarization-maintaining fiber is inserted in the cavity to induce birefringence filtering to significantly enhance the stability of the proposed laser through the combined effects of optical filtering and nonlinear spectral broadening. The laser can operate about 2 and 6 nm in the case of 1.48-ps and 875-fs output pulsewidth, with 3-dB bandwidth, respectively. The laser can remain mode locked, during our measurement time, without any cavity length or temperature feedback control.
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    Asynchronous Harmonic Mode Locking in an All-Normal Dispersion Yb-Doped Fiber Laser
    (2013-02-01)
    Wang, Sheng-Min
    ;
    Jyu, Siao-Shan
    ;
    Hsiang, Wei-Wei
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    We present detailed experimental and theoretical results to demonstrate the possibility of asynchronous harmonic mode locking in an all-normal dispersion fiber laser. In contrast to asynchronous soliton mode-locking operation in the anomalous dispersion regime, more profound laser dynamics are found. The experimentally demonstrated 10-GHz asynchronous harmonic mode-locked Yb-doped fiber laser exhibits an excellent super-mode noise suppression ratio in the RF spectrum with picosecond output pulsewidth.