Han, Young-Geun Chung, Youngjoo Lee, Sang Bae Kim, Chang-Seok Jeong, Myung Yung Kim, Moon Ki 2024-01-20T21:33:07Z 2024-01-20T21:33:07Z 2021-09-03 2009-04-20 1559-128X https://pubs.kist.re.kr/handle/201004/132561 A simple configuration for simultaneous measurement of temperature and strain exploiting a temperature-insensitive birefringent interferometer based on a photonic crystal fiber incorporating an erbium-doped fiber (EDF) is investigated. The transmission peak power of the birefringent interferometer incorporating the EDF is changed by the temperature variation because the amplified spontaneous emission of the EDF strongly depends on temperature. The applied strain changes the peak wavelength of he birefringent interferometer connecting with the EDF, which can make it possible to discriminate concurrent sensitivities like temperature and strain. The temperature and strain sensitivities were -0.04 dB/degrees C and 1.3 pm/mu epsilon, respectively (c) 2009 Optical Society of America English OPTICAL SOC AMER DEPENDENT FLUORESCENCE CHARACTERISTICS Temperature and strain discrimination based on a temperature-insensitive birefringent interferometer incorporating an erbium-doped fiber Article 10.1364/AO.48.002303 1 APPLIED OPTICS, v.48, no.12, pp.2303 - 2307 APPLIED OPTICS 48 12 2303 2307 scie scopus 000265887200014 2-s2.0-65349176644 Optics Optics Article DEPENDENT FLUORESCENCE CHARACTERISTICS tempature sensor strain sensor erbium doped fiber Polarization maintaining