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  • Double-sided polishing long...
    Chuen-Lin Tien; Tsai-Wei Lin; Hung-Yi Hsu; Li-Chieh Chen; Yu-Chung Chen; Wen-Feng Liu

    2009 Asia Communications and Photonics conference and Exhibition (ACP), 2009-Nov., Volume: 2009-Supplement
    Conference Proceeding

    A new liquid refractive index sensor using double-sided polishing long-period fiber gratings (DSP-LPFG) is presented. The influence of residual cladding thickness on the sensitivity of measuring liquid refractive index is investigated. The proposed sensor response to external liquid refractive indices varying in the range of n=1.330 − 1.375 has been carried out by measuring the transmission wavelength changes. Experimental results show that well-controlled polishing parameters can significantly increase the sensitivity. The sensitivity of −143.396 nm/RIU can be obtained in this study.