| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
|
|
|
|
In-Fiber Mach–Zehnder Interferometer Based on Waist-Enlarged Taper and Core-Mismatching for Strain Sensing |
| ZHANG Yun-Shan1**, QIAO Xue-Guang1,2, SHAO Min1, LIU Qin-Peng1 |
1Key Laboratory on Photoelectric Oil-Gas Logging and Detecting (Ministry of Education), School of Science, Xi'an Shiyou University, Xi'an 710065
2Department of Physics, Northwest University, Xi'an 710069
|
|
| Cite this article: |
|
ZHANG Yun-Shan, QIAO Xue-Guang, SHAO Min et al 2015 Chin. Phys. Lett. 32 064208 |
|
|
|
|
Abstract An in-fiber Mach–Zehnder interferometer for strain measurement is proposed and experimentally demonstrated. The sensor consists of a taper followed by a short section of a multi-mode fiber (MMF) and a dispersion compensating fiber (DCF), which is sandwiched between two single mode fibers (SMFs). The taper is used as a fiber coupler to excite cladding modes in the SMF, and these cladding modes transmit within the MMF and the DCF. The core mode and the cladding modes interfere in the DCF–SMF fusion point to form intermodal interference. A well-defined interference spectrum is obtained in the experiment. Selected interference dips are used to measure the strain changes. The experimental results show that this device is sensitive to strain with the wavelength-referenced sensitivity of 2.6 pm/μ? and the power-referenced sensitivity of 0.0027 dB/μ?, respectively.
|
|
|
Received: 07 January 2015
Published: 30 June 2015
|
|
| PACS: |
42.81.Bm
|
(Fabrication, cladding, and splicing)
|
| |
42.81.Pa
|
(Sensors, gyros)
|
| |
07.07.Df
|
(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
|
|
|
|
|
|
[1] Sante R D, Donati L, Troiani E and Proli P 2014 Met. Mater. Int. 20 537
[2] Gao X D, Gao P and Wang X 2009 Opto-Electron. Eng. 36 88
[3] Chen F C, Yu C Q and Zhang H L 2014 J. Optoelectron. Laser 25 968
[4] Li J Z, Sun B C and Du Y L 2014 Optoelectron. Lett. 10 30
[5] Yang C X, Zhang H, Liang H, Miao Y P, Liu B, Wang Z and Liu Y G 2014 IEEE Photon. J. 6 6800808
[6] Shao M, Qiao X G, Fu H W, Li H D, Zhao J L and Li Y 2014 Opt. Lasers Eng. 52 86
[7] Li H D, Fu H W, Shao M, Zhao N, Qiao X G, Liu Y G, Li Y and Yan X 2013 Acta Phys. Sin. 62 214209 (in Chinese)
[8] Zu P, Xiang W H, Bai Y B and Jin Y X 2011 Acta Opt. Sin. 31 0806005 (in Chinese)
[9] Li L C, Xia L, Xie Z H and Liu D M 2012 Opt. Express 20 11109
[10] An J L, Liang H H, Jin Y X and Dong X Y 2014 Microwave Opt. Technol. Lett. 56 954
[11] Tong Z R, Wang J Y, Yang X F and Cao Y 2012 Acta Opt. Sin. 32 1206001 (in Chinese)
[12] Qureshi K K, Liu Z Y, Tam H and Zia M F 2013 Opt. Commun. 309 68
[13] Li E B 2007 IEEE Photon. Technol. Lett. 19 1226
[14] Sun M, Xu B, Dong X Y and Li Y 2012 Opt. Commun. 285 3721
[15] Xu F, Li C, Ren D X, Lu L, Lu W W, Feng F and Yu B L 2012 Chin. Opt. Lett. 10 070603
[16] Liu Z B, Yin B, Liang X, Bai Y L, Tan Z W, Liu S, Li Y, Liu Y and Jian S S 2014 Appl. Phys. B 117 571
[17] Zhou D P, Wei L, Liu W K, Liu Y and John W Y Lit 2008 Appl. Opt. 47 1668 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
