纤芯失配熔接的高灵敏度光纤折射率传感器

高平安; 荣强周; 孙浩; 忽满利

纤芯失配熔接的高灵敏度光纤折射率传感器

西北大学物理系,陕西西安 710069

详细信息

通讯作者:
高平安（1960-），男，陕西渭南人，工程师，主要从事光电检测研究和实验教学工作。论文联系人,忽满利 Email: huml@nwu.edu.cn

高平安（1960-），男，陕西渭南人，工程师，主要从事光电检测研究和实验教学工作。论文联系人,忽满利 Email: huml@nwu.edu.cn

中图分类号: TN253
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出版历程
- 刊出日期: 2013-05-14

High-sensitive fiber-optic refractometer constructed by core-diameter-mismatch welding

Department of Physics,Northwest University,Xi-an 710069,China

摘要

摘要: 提出并实验验证了一种基于马赫泽德干涉仪(MZI)的高灵敏度光纤折射率(RI)传感器。传感头由一段单模光纤(SMF)夹熔在两段较短的细芯光纤(TCF)中组成TCFSMF-TCF结构，其总长度为9 mm。由于光纤纤芯失配导致的纤芯模和包层模发生干涉，干涉谱对传感头外部折射率的响应极其敏感。使用该传感器检测具有不同折射率的甘油水溶液，实验结果显示：传感器干涉谱的共振波长随环境折射率的增大向长波方向漂移，其折射率灵敏度在1.33 RIU～1.38 RIU范围内约为159 nm/RIU。该传感器具有结构简单、易于制造、成本较低、灵敏度高、抗电磁干扰能力强等优点，在生物化学与环境监测等领域具有较大的应用潜力。
- 光纤传感器 /
- 折射率 /
- 马赫泽德干涉仪
Abstract: A high sensitive refractive index (RI) sensor based on Mach-Zehnder interferometer (MZI) is proposed and experimentally demonstrated. The sensing head is formed by a single-mode fiber (SMF) sandwiched between two short sections of thin-core fibers (TCFs), and the length of TCF-SMF-TCF MZI configuration is about 9 mm. A well-defined interference pattern is obtained as the result of fiber-core mismatch and core-cladding modes interference. The selected interference spectrum is extremely sensitive to the response of ambient RI. Using the proposed sensor to measure the glycerine aqueous solution with different RI, results indicate that the RI sensitivity of the sensor is 159 nm/RIU in the ambient RI range of 1.33 RIU～1.38 RIU. The fiber sensor has advantages of low-cost, simple mechanism, easy fabrication, high sensitivity, anti-electromagnetic interference, etc. It has great application potentiality in fields of bio-chemical measurement and environmental monitoring.
- optical fiber sensor /
- refractive index /
- Mach-Zehnder interferometer

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参考文献(1)

［1］WU Qiang, SEMENOVA Y, WANG Peng-fei, et al. High sensitivity SMS fiber structure based refractometer analysis and experiment［J］. Optics Express, 2011, 19(9): 7937-7944.
［2］GUO Tuan, TAM H, KRUG P, et al. Reflective tilted fiber Bragg grating refractometer based on strong cladding to core recoupling［J］. Optics Express, 2009, 17(7): 5736-5742.
［3］JIANG M, ZHANG A P, WANG Y C, et al. Fabrication of a compact reflective long-period grating sensor with a cladding-mode-selective fiber end-face mirror［J］. Optics Express, 2009, 17(20): 17976-17982.
［4］WU Qiang, SEMENOVA Y, MATHEW J, et al. Humidity sensor based on a single-mode hetero-core fiber structure［J］. Optics Letters, 2011, 36(10): 1752-1754.
［5］LI Yi, HARRIS E, CHEN Liang, et al. Application of spectrum differential integration method in an in-line fiber Mach-Zehnder refractive index sensor［J］. Optics Express, 2010, 18(8): 8135-8143.
［6］WU Di, ZHU Tao, DENG Ming, et al. Refractive index sensing based on Mach-Zehnder interferometer formed by three cascaded single-mode fiber tapers［J］. Applied Optics, 2011, 50(11): 1548-1553.
［7］WANG Y, YANG M W, WANG D N, et al. Fiber in-line Mach-Zehnder interferometer fabricated by femtosecond laser micromachining for refractive index measurement with high sensitivity［J］. Journal of the Optical Society of America, 2010, 27(3): 370-374.
［8］LI Yu-hang, TONG Li-min. Mach-Zehnder interferometers assembled with optical microfibers or nanofibers［J］. Optics Letters, 2006, 33(4): 303-305.
［9］TIAN Z B, YAM S S-H, BARNES J, et al. Refractive index sensing with Mach-Zehnder interferometer based on concatenating two single-mode fiber tapers［J］. IEEE Photonics Technology Letters, 2008, 20(8): 626-628.
［10］DING J F, ZHANG A P, SHAO L Y, et al. Fiber-taper seeded long-period grating pair as a highly sensitive refractive-index sensor［J］. IEEE Photonics Technology Letters, 2005, 17(6): 1247-1249.
［11］FAN Yan-en, ZHU Tao, SHI Lei-lei, et al. Highly sensitive refractive index sensor based on two cascaded special long-period fiber gratings with rotary refractive index modulation［J］. Applied Optics, 2011, 50(23): 4604-4610.
［12］WEI Tao, LAN Xin-wei, XIAO Hai. Fiber inline core-cladding-mode Mach-Zehnder interferometer fabricated by two-point CO2 laser irradiations［J］. IEEE Photonics Technology Letters, 2009, 21(10): 669-671.
［13］JUNG Y, KIM S, LEE D, et al. Compact three segmented multimode fibre modal interferometer for high sensitivity refractive-index measurement［J］. Measurement Science and Technology, 2006, 17(5): 1129-1133.
［14］ZHANG C S, CHIANG K S. CO2 laser-written long-period fiber gratings in a Germanium-Boron codoped fiber: effects of applying tension during the writing process［J］. IEEE Photonics Technology Letters, 2009, 21(19): 1456-1458.
［15］NGUYEN L V, HWANG D, MOON S, et al. High temperature fiber sensor with high sensitivity based on core diameter mismatch［J］. Optics Express, 2008, 16(15): 11369-11375.
［16］VILLATORO J, MONZON-HERNANDEZ D. Low-cost optical fiber refractive-index sensor based on core diameter mismatch［J］. Journal of Lightwave Technology, 2006, 24(3): 1409-1413.
［17］DONG Bo, WEI Li, ZHOU Da-peng, et al. Core-offset small-core-diameter dispersion compensation fiber interferometer and its applications in fiber sensors［J］. Applied Optics, 2009, 48(23): 4577-4581.
［18］WANG Q, FARRELL G. All-fiber multimode-interference-based refractometer sensor: proposal and design［J］. Optics Letters, 2006, 31(3): 317-319.
［19］TIAN Zhao-bing, YAM S S-H. In-line single-mode optical fiber interferometric refractive index sensors［J］. Journal of Lightwave Technology, 2009, 27(13): 2296-2306.
［20］CANNING J, CARTER A L G. Modal interferometer for insitu measurements of induced core index change in optical fibers［J］. Optics Letters, 1997, 22(8): 561-563.

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纤芯失配熔接的高灵敏度光纤折射率传感器

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High-sensitive fiber-optic refractometer constructed by core-diameter-mismatch welding

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纤芯失配熔接的高灵敏度光纤折射率传感器

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High-sensitive fiber-optic refractometer constructed by core-diameter-mismatch welding

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