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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 會議論文  >  Demonstration of arbitrary channel selection utilizing a pulse-injected double phase-locked semiconductor laser with optical injection

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83982

    Title: Demonstration of arbitrary channel selection utilizing a pulse-injected double phase-locked semiconductor laser with optical injection
    Authors: Y. S. Juan;F. Y. Lin
    教師: 林凡異
    Date: 2011
    Publisher: International Society for Optical Engineering
    Relation: SPIE Photonic West, San Francisco, USA, Jan. 22-27, 2011
    Keywords: semiconductor lasers
    nonlinear dynamics
    optical injection
    Abstract: We demonstrate and characterize arbitrary channel selection utilizing both the double phase-locked and optical injection schemes experimentally. The double phase-locked scheme is realized by both optical injection and electrical modulation to the slave laser (SL) from a pulsed laser. The pulsed laser is generated by the semiconductor laser under optoelectronic feedback, which outputs repetitive pulse train with the repetition frequency controlled by the feedback delay time and feedback strength. When the SL subject to only the optical pulse injection from the pulsed laser, a broadband microwave frequency comb with amplitude variation ±5 dB in a 20 GHz range is generated. By further applying an electrical modulation to form a double phase-locked condition, a main channel can be selected accordingly. The advantages of large channel suppression ratio, system stabilization, and spurious noise reduction are obtained by using the double phase-locked technique. Moreover, by further applying an optical cw injection from a tunable laser, we demonstrate the selection of a secondary channel. A selection range of about 7.2 GHz is achieved by adjusting the cw injection strength. Average channel suppression between the main and secondary channels to the undesired channels with ratios of 41.8 and 25.9 dB are obtained, respectively. The single sideband (SSB) phase noise of -60 dBc/kHz (-90 dBc/Hz estimated) is achieved at offset frequencies of 25 and 200 kHz for the main and secondary channels, respectively. Demonstration of communication between the main and secondary channels is also demonstrated.
    Relation Link: http://spie.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83982
    Appears in Collections:[電機工程學系] 會議論文
    [光電工程研究所] 會議論文

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