Control of resonant peak depths of tunable long-period fiber gratings using overcoupling

Sung Hyun Nam, Jonathan Lee, Shizhuo Yin

    Research output: Contribution to journalArticlepeer-review

    7 Scopus citations

    Abstract

    We present a method to reduce changes in the resonant peak depth of a long-period fiber grating (LPFG) as the resonant band is tuned by varying the external refractive index. We theoretically analyze the effects of the initial coupling strength on the peak depth change as external refractive index is varied. By controlling the initial coupling strength, it is experimentally demonstrated that an optimum peak depth can be obtained over a range of operating wavelengths that will maximize the sensitivity and stability of LPFG based sensors and tunable filters.

    Original languageEnglish (US)
    Pages (from-to)961-964
    Number of pages4
    JournalOptics Communications
    Volume284
    Issue number4
    DOIs
    StatePublished - Feb 15 2011

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering

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