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🏛️國立陽明交通大學機構典藏

Author: search.filters.author.Jyu, Siao-ShanHas files: No

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    A 110 GHz passive mode-locked fiber laser based on a nonlinear silicon-micro-ring-resonator
    (2014-06-01)
    Yang, Ling-Gang
    ;
    Jyu, Siao-Shan
    ;
    Chow, Chi-Wai
    ;
    Yeh, Chien-Hung
    ;
    Wong, Chi-Yan
    Mode-locked fiber lasers have many important applications in science and engineering. In this work, we demonstrate for the first time a 110 GHz high repetition rate mode-locked fiber laser using a silicon-based micro-ring resonator (SMRR) to act as an intra-cavity optical comb filter, as well as an optical nonlinear element. No electrical bias for the SMRR is required to reduce free carrier absorption. The SMRR has a free spectral range of 0.88 nm, enforcing laser mode-locking at the 110 GHz high rate. The optical nonlinearity of the SMRR also supports the dissipative four-wave mixing effect for generating the mode-locked optical pulse trains. The mode-locked pulse-width, optical 3 dB spectral bandwidth and the time-bandwidth product (TBP) are experimentally measured under different pump currents to the erbium-doped fiber-amplifier module inside the laser cavity. The relative intensity noise and the line-width of the proposed laser are also evaluated. Furthermore, a long-term monitoring is performed. The experimental results show that the optical pulse train generated by the SMRR-based mode-locked fiber laser has a 2.6 ps pulse-width (pump current at 400 mA) at a 110 GHz high repetition rate, narrow line-width (1 kHz), high stability (under observation of an hour), and nearly Gaussian transform-limited (TBP is 0.455).
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    300 GHz Bound Pulse Generation in a Filter-Assisted Harmonic Mode-Locked Er-doped Fiber Laser with 20 GHz Phase Modulation
    (2014)
    Wang, Sheng-Min
    ;
    Jyu, Siao-Shan
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    ;
    Department of Photonics
    By inserting a section of PM fiber for birefringence interference filtering with 100 GHz spacing, stable 300 GHz bound pulses have been successfully generated in a harmonic mode-locked Er-doped fiber laser with 20 GHz phase modulation frequency.
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    Multi-Bound Pulse State in a 250 GHz Mode-Locked Fiber Laser Based on a Silicon Micro-Ring Resonator
    (2013-01-01)
    Jyu, Siao-Shan
    ;
    Yang, Ling-Gang
    ;
    Wong, Chi Yan
    ;
    Yeh, Chien-Hung
    ;
    Chow, Chi-Wai
    A 250 GHz passive mode-locked Er-doped fiber laser with a silicon-based micro-ring resonator is demonstrated experimentally. Besides the single pulse operation at 250 GHz, we also observe an interesting multi-bound pulse operation state.
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    Laser Dynamics of Asynchronous Mode-locked Fiber Lasers
    (2013)
    Lai, Yinchieh
    ;
    Jyu, Siao-Shan
    ;
    Wang, Sheng-Min
    ;
    交大名義發表
    ;
    光電工程學系
    New laser dynamics of asynchronous mode-locked fiber lasers will be reviewed in details, with the emphases on the interesting repetition frequency pulling effect and the all-normal dispersion operation state of asynchronous mode-locking.
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    Repetition frequency pulling effects in asynchronous mode-locking
    (2013-02-01)
    Jyu, Siao-Shan
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    ;
    Department of Photonics
    Repetition frequency pulling effects are found to exist in asynchronous harmonic mode-locked fiber soliton lasers. The deviation frequency of asynchronous mode-locking is found to be dependent on the active modulation depth, not wholly determined by the difference between the intracavity active modulation frequency and the cavity harmonic repetition frequency. Transition from asynchronous to synchronous mode-locking will also occur when the modulation depth is above the threshold. Independent repetition frequency control of asynchronous mode-locked laser can be achieved through the effects. (C) 2013 Optical Society of America
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    Pulse Repetition Rate Control of Asynchronous Mode-Locked Fiber Lasers without Changing the Cavity Length
    (2012)
    Jyu, Siao-Shan
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    ;
    Department of Photonics
    A new method for fine-controlling the mode-locked laser repetition rate without changing the cavity length is proposed and demonstrated on a 10GHz asynchronous mode-locked Er-fiber soliton laser through the EO modulation strength adjustment.
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    A simple group velocity dispersion measurement method by RF spectral periodic pulse timing variation characterization
    (2009)
    Liu, Shiou-Fong
    ;
    Jyu, Siao-Shan
    ;
    Chang, Hon-Chieh
    ;
    Hsiang, Wei-Wei
    ;
    Lai, Yinchieh
    By measuring the dispersion-induced periodic pulse timing variation with a wavelength-swept pulse light source and a RF spectrum analyzer, the fiber group velocity dispersion can be determined with excellent accuracy. (C)2009 Optical Society of America
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    Periodically Tapered Long-Period Fiber Gratings by CO2 Laser Heating and Tension Stretching
    (2010)
    Lu, Po-Hsuan
    ;
    Hsu, Kuei-Chu
    ;
    Jyu, Siao-Shan
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    Periodically tapered long-period fiber gratings (LPFGs) are demonstrated by using CO2 laser heating with a cylindrical lens and periodically scanned along the fiber axis on a tensioned standard single-mode fiber. The depth of periodic relief on the fiber surface depends on the writing time as well as the grating period. The LPFG has perfect axial symmetric tapered shape that is helpful for achieving polarization independent properties.
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    Passive Mode-Locked Er-Fiber Laser with Large Anomalous Dispersion and Nonlinearity
    (2010)
    Huang, Bo-wei
    ;
    Jyu, Siao-Shan
    ;
    Lin, Ja Hon
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    We study the characteristics of a passive mode-locked Er-fiber laser with over 400m single mode fibers inside the cavity to achieve a low pulse repetition rate of 500 kHz and wide optical spectrum of 45nm.
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    Characteristics of an Asynchronous Rational Harmonic Mode-Locked Er-Fiber Laser
    (2010)
    Chang, Chia-Hao
    ;
    Jyu, Siao-Shan
    ;
    Hsiang, Wei. -Wei.
    ;
    Lai, Yinchieh
    ;
    光電工程學系
    High repetition rate ultra-short optical pulse trains from an asynchronous rational harmonic mode-locked (ARHML) Er-fiber laser are experimentally demonstrated and studied. This new laser exhibits obvious advantages of pulse amplitude equalization when compared to conventional rational harmonic mode-locked fiber lasers.