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  • use of copper-coated fiber as a tunable optical time-delay line in precise timing systems

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1022
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in this paper we present a novel, time-delay approach using a copper-coated fiber. piezo optical-fiber stretchers and temperature-controlled fiber spools are normally used for a conventional time-delay lines. a copper-coated fiber preserves the performance of a standard single-mode optical fiber, while at the same time acting as an electrical wire, which can be effectively heated by applying an electrical current. as a result of the significant temperature change, the signal (group) delay can be properly adjusted and controlled. compared to piezo optical-fiber stretchers and temperature-controlled fiber spools, much shorter lengths of fiber are required and a faster response time can be achieved. this paper also proposes a simple, lumped thermal model and thus a copper-coated fiber can be included in the heat-transfer and response-time calculations of a realistic system that involves surrounding elements (e.g., heatsinks).

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