[1] ZHENG J R, YAN P G, YU Y Q, et al. Temperature and index insensitive strain sensor based on a photonic crystal fiber in line Mach-Zehnder interferometer. Optics Communications, 2013, 297: 7-11.
[2] GENG Y F, LI X J, TAN X L, et al. High-sensitivity Mach-Zehnder interferometric temperature fiber sensor based on a waist-enlarged fusion bitaper. IEEE Sensors Journal, 2011, 11(11): 2891-2894.
[3] LU Y F, SHEN Ch Y, ZHONG Ch, et al. Refractive index and temperature sensor based on double-pass M-Z interferometer with an FBG. IEEE Photonics Technology Letters, 2014, 26(11): 1124-1127.
[4] GONG Y, ZHAO T, RAO Y J, et al. All-fiber curvature sensor based on multimode interference. IEEE Photonics Technology Le-tters, 2011, 23(11): 679-681.
[5] WANG R H, ZHANG J, WENG Y Y, et al. Highly sensitive curvature sensor using an in-fiber Mach-Zehnder interferometer. IEEE Sensors Journal, 2013, 13(5): 1766-1770.
[6] MAO L L, LU P, LAO Z F, et al. Highly sensitive curvature sensor based on single-mode fiber using core-offset splicing. Optics Laser Technology, 2014, 57: 39-43.
[7] MONZON-HERNANDEZ D, MARTINEZ-RIOS A, TORRES-GOMEZ I, et al. Compact optical fiber curvature sensor based on concatenating two tapers. Optics Letters, 2011, 36(22): 4380-4382.
[8] ZHOU W J, ZHOU Y, DONG X Y, et al. Fiber-optic curvature sensor based on cladding-mode Bragg grating excited by fiber multimode interferometer. IEEE Photonics Journal, 2012, 4(3): 1051-1057.
[9] FRAZI O, VIEGAS J, CALDAS P, et al. All-fiber Mach-Zehnder curvature sensor based on multimode interference combined with a long-period grating. Optics Letters, 2007, 32(21): 3074-3076.
[10] WAN L B, ZHANG B M, WANG D F, et al. A kind of fiber Bragg grating strain sensor with jacket. Laser Technology, 2002, 26(5): 385-387 (in Chinese).
[11] DENG M, TANG Ch P, ZHU T, et al. Highly sensitive bend sensor based on Mach-Zehnder interferometer using photonic crystal fiber. Optics Communications, 2011, 284(12): 2849-2853.
[12] YIN G L, LOU Sh Q, ZOU H. Compact and high sensitivity curvature sensor based on twin core fiber coupler. Proceedings of the SPIE, 2012,8421: 84212P.
[13] XU Zh L, SUN Q Zh, LI X L, et al. Dual core photonic crystal fiber based Mach-Zehnder interferometer assisted with two tapers for bending measurement[C]//Conference on Lasers and Electro-Optics/Pacific Rim. Washington DC,USA:Optical Society of America, 2013: ThF1_3.
[14] DENG M, TANG Ch P, ZHU T, et al. PCF-based Fabry-Prot interferometric sensor for strain measurement at high temperatures. IEEE Photonics Technology Letters, 2011, 23(11): 700-702.
[15] ZHANG Sh Sh, ZHANG W G, GAO Sh Ch, et al. Fiber-optic bending vector sensor based on Mach-Zehnder interferometer exploiting lateral-offset and up-taper. Optics Letters, 2012, 37(21): 4480-4482.