Optimization of Refractive Index Sensitivity in Nanofilm-Coated Long-Period Fiber Gratings Near the Dispersion Turning Point

被引：27
|
作者：
Zou, Fang [1 ,2 ]
Liu, Yunqi [2 ]
Mou, Chengbo [2 ]
Zhu, Shan [3 ]
机构：
[1] Hebei GEO Univ, Dept Informat Engn, Shijiazhuang 050031, Hebei, Peoples R China
[2] Shanghai Univ, Joint Int Res Lab Specialty Fiber Opt & Adv Commu, Shanghai Inst Adv Commun & Data Sci, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200444, Peoples R China
[3] Shanghai Normal Univ, Tianhua Coll, Sch Engn, Shanghai 201815, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2020年 / 38卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Sensitivity; Gratings; Refractive index; Optical fibers; Optical fiber sensors; Nanobioscience; Atomic layer deposition; dispersion turning point; long-period fiber gratings (LPFGs); mode transition; refractive Index sensor; titanium dioxide; TRANSITION MODE; SENSORS; DESIGN;
D O I：
10.1109/JLT.2019.2949373
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this article, we present detailed investigation of the high-performance long-period fiber gratings (LPFGs) based surrounding refractive index (SRI) sensors. A comprehensive design approach is proposed to optimize the sensitivity in a specific SRI range by combining adequately both dispersion turning point (DTP) and mode transition (MT) effects. The SRI sensitivity enhancement induced by the DTP and the MT is discussed respectively. The relative importance of the mechanisms in different SRI range is revealed. The mode transitions of the HE1,18 and HE1,20 are investigated in a single LPFG, where two high sensitivity ranges are obtained. The atomic layer deposition (ALD) technology is used to deposit the titanium dioxide (TiO2) nano-film on the LPFG surface. The SRI sensitivities of 1 x 10(4) nm /RIU in the SRI range 1.336-1.3397 and 4.2 x 10(4) nm/RIU in the range 1.4526-1.4561 are achieved, respectively. The experimental results are well consistent with the theoretical analysis.
引用
收藏
页码：889 / 897
页数：9
相关论文
共 50 条
  • [1] Nanofilm-coated photonic crystal fiber long-period gratings with modal transition for high chemical sensitivity and selectivity
    Zheng, Shijie
    Zhu, Yinian
    Krishnaswamy, Sridhar
    [J]. SMART SENSOR PHENOMENA, TECHNOLOGY, NETWORKS, AND SYSTEMS INTEGRATION 2012, 2012, 8346
  • [2] Fiber humidity sensors with high sensitivity and selectivity based on interior nanofilm-coated photonic crystal fiber long-period gratings
    Zheng, Shijie
    Zhu, Yinian
    Krishnaswamy, Sridhar
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2013, 176 : 264 - 274
  • [3] Refractive index sensitivity of nano-film coated long-period fiber gratings
    Zou, Fang
    Liu, Yunqi
    Deng, Chuanlu
    Dong, Yanhua
    Zhu, Shan
    Wang, Tingyun
    [J]. OPTICS EXPRESS, 2015, 23 (02): : 1114 - 1124
  • [4] Dispersion optimization of photonic crystal fiber long-period gratings for a high-sensitivity refractive index sensing
    Kanka, Jiri
    [J]. OPTICAL SENSORS 2011 AND PHOTONIC CRYSTAL FIBERS V, 2011, 8073
  • [5] High-sensitive refractive index sensor based on the long-period gratings inscribed in the tapered fiber at dispersion turning point
    Chen, Long
    Ma, Yuehui
    Jiang, Chen
    Chen, Siyu
    Wu, Meng
    Zhang, Weidong
    Mou, Chengbo
    Liu, Yunqi
    [J]. OPTICS COMMUNICATIONS, 2024, 569
  • [6] Sensitivity characteristics near the dispersion turning points of long-period fiber gratings in B/Ge codoped fiber
    Shu, XW
    Zhang, L
    Bennion, I
    [J]. OPTICS LETTERS, 2001, 26 (22) : 1755 - 1757
  • [7] Sensitivity optimization with cladding-etched long period fiber gratings at the dispersion turning point
    Del Villar, Ignacio
    Cruz, Jose L.
    Socorro, Abian B.
    Corres, Jesus M.
    Matias, Ignacio R.
    [J]. OPTICS EXPRESS, 2016, 24 (16): : 17680 - 17685
  • [8] REFRACTIVE INDEX SENSITIVITY OF THE TILT LONG-PERIOD FIBER GRATINGS COATED WITH NANO-SCALE GOLDEN FILM
    Zhao, Yuchen
    Liu, Yunqi
    Guo, Qiang
    Zou, Fang
    Wang, Tingyun
    [J]. 2013 12TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS AND NETWORKS (ICOCN), 2013,
  • [9] Numerical analysis of refractive index sensitivity of long-period gratings in photonic crystal fiber
    Zhu, Yinian
    He, Zonghu
    Kanka, Jiri
    Du, Henry
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2008, 129 (01): : 99 - 105
  • [10] Sensitivity-optimized long-period fiber gratings for refractive index and temperature sensing
    Du, Chao
    Zhao, Yong
    Wang, Qi
    Xia, Feng
    [J]. INSTRUMENTATION SCIENCE & TECHNOLOGY, 2018, 46 (04) : 435 - 449
12345