Laser & Optoelectronics Progress, Volume. 51, Issue 8, 80604(2014)

Research on Sensing Characteristic of a Micro-Region Etched Long-Period Fiber Grating Michelson Interferometer

He Rushuang1、*, Zhang Bin1, Tao Weidong1, Yan Feibiao1, Duan Tianchen2, and Dong Jianfeng3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • show less

    Based on a single long period fiber grating (LPFG) with optical fiber pigtail coated with highreflective film, a LPFG Michelson interferometer with partly etched fiber cladding LPFG is designed. It improves the LPFG sensitivity. By applying interference principle, the change of interference peaks along with environment refractive index is obtained. The refractive index sensitivity of no etched LPFG Michelson interferometer is compared with that of the etched LPFG Michelson interferometer, results show that the change of the refractive index sensitivity is significantly improved. The peak wavelength of interferometer shifts from 0.9 nm to 3.4 nm when liquid refractive index is 1.333 and 1.352.

    Tools

    Get Citation

    Copy Citation Text

    He Rushuang, Zhang Bin, Tao Weidong, Yan Feibiao, Duan Tianchen, Dong Jianfeng. Research on Sensing Characteristic of a Micro-Region Etched Long-Period Fiber Grating Michelson Interferometer[J]. Laser & Optoelectronics Progress, 2014, 51(8): 80604

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Jan. 15, 2014

    Accepted: --

    Published Online: Jul. 30, 2014

    The Author Email: He Rushuang (rshuanghe@sina.cn)

    DOI:10.3788/lop51.080604

    Topics