Active temperature compensation design of sensor with fiber gratings
A technique for compensation of temperature effects in fiber grating sensors is reported. For strain sensors and other sensors related to strain such as electromagnetic sensors, a novel structure is designed, which uses two fiber Bragg gratings (FBGs) as strain differential sensor and has temperature effects cancelled. Using this technique, the stress sensitivity has been amplified and gets up to 0.226 nm/N, the total variation in wavelength difference within the range of 3-45 ℃ is 0.03 nm, 1/14 of the uncompensated FBG.The structure can be used in the temperature-insensitive static strain measurement and minor-vibration measurement.
作 者： 董兴法 黄勇林 姜莉 开桂云 董孝义 作者单位： 董兴法(Institue of Modern Optics, Nankai University, Tianjin 300071;University of Science and Technology of Suzhou, Suzhou 215011)黄勇林(University of Science and Technology of Suzhou, Suzhou 215011)
姜莉,开桂云,董孝义(Institue of Modern Optics, Nankai University, Tianjin 300071)
刊 名： 中国光学快报(英文版) ISTIC EI 英文刊名： CHINESE OPTICS LETTERS 年，卷(期)： 2004 2(10) 分类号： 关键词：