title: Simultaneous measurement of strain and temperature by employing fiber Mach-Zehnder interferometer.
abstract: We demonstrated a novel fiber in-line Mach-Zehnder interferometer (MZI) with a large fringe visibility of up to 17 dB, which was fabricated by misaligned splicing a short section of thin core fiber between two sections of standard single-mode fiber. Such a MZI could be used to realize simultaneous measurement of tensile strain and temperature. Tensile strain was measured with an ultrahigh sensitivity of -0.023 dB/μɛ via the intensity modulation of interference fringes, and temperature was measured with a high sensitivity of 51 pm/°C via the wavelength modulation of interference fringe. That is, the MZI-based sensor overcomes the cross-sensitivity problem between tensile strain and temperature by means of different demodulation methods. Moreover, this proposed sensor exhibits the advantages of low-cost, extremely simple structure, compact size (only about 10 mm), and good repeatability.
authors: Jiangtao
authors: J
authors: Zhou
authors: Changrui
authors: C
authors: Liao
authors: Yiping
authors: Y
authors: Wang
authors: Guolu
authors: G
authors: Yin
authors: Xiaoyong
authors: X
authors: Zhong
authors: Kaiming
authors: K
authors: Yang
authors: Bing
authors: B
authors: Sun
authors: Guanjun
authors: G
authors: Wang
authors: Zhengyong
authors: Z
authors: Li
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008365:Manometry / Q000295:instrumentation*; D008422:Materials Testing / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D013314:Stress, Mechanical; D013718:Tensile Strength; D013817:Thermography / Q000295:instrumentation*; D014159:Transducers