110 GHz hybrid mode-locked fiber laser with enhanced extinction ratio based on nonlinear silicon-on-insulator micro-ring-resonator (SOI MRR)
Publication in refereed journal

香港中文大學研究人員
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摘要We propose and experimentally demonstrate a new 110 GHz high-repetition-rate hybrid mode-locked fiber laser using a silicon-on-insulator microring-resonator (SOI MRR) acting as the optical nonlinear element and optical comb filter simultaneously. By incorporating a phase modulator (PM) that is electrically driven at a fraction of the harmonic frequency, an enhanced extinction ratio (ER) of the optical pulses can be produced. The ER of the optical pulse train increases from 3 dB to 10 dB. As the PM is only electrically driven by the signal at a fraction of the harmonic frequency, in this case 22 GHz (110 GHz/5 GHz), a low bandwidth PM and driving circuit can be used. The mode-locked pulse width and the 3 dB spectral bandwidth of the proposed mode-locked fiber laser are measured, showing that the optical pulses are nearly transform limited. Moreover, stability evaluation for an hour is performed, showing that the proposed laser can achieve stable mode-locking without the need for optical feedback or any other stabilization mechanism.
著者Liu Y., Hsu Y., Chow C.-W., Yang L.-G., Yeh C.-H., Lai Y.-C., Tsang H.-K.
期刊名稱Laser Physics Letters
詳細描述doi:10.1088/1612-2011/13/3/035101.
出版年份2016
月份3
日期1
卷號13
期次3
出版社Wiley - VCH Verlag GmbH & CO. KGaA
出版地Germany
國際標準期刊號1612-2011
電子國際標準期刊號1612-202X
語言英式英語
關鍵詞fiber lasers, fiber optics, optical communication

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