PHOTONIC SENSORS / Vol. 8, No. 2, 2018: 157‒167 Temperature Compensation Fiber Bragg Grating Pressure Sensor Based on Plane Diaphragm Minfu LIANG, Xinqiu FANG*, and Yaosheng NING Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, 221116, China ∗Corresponding author: Xinqiu FANG E-mail address: fangxinqiu@cumt.edu.cn 1. But for electrical pressure sensors have a lot of technological limitations which restrict their application in harsh environments with electromagnetic interference, dangerous explosion matters, or extreme temperatures and pressures. 2. While the fiber Bragg grating (FBG) sensing technology being as a new measurement technology [2], which is mainly used as a sensitive component for the manufacture of optical fiber sensors and has the virtues of intrinsic safety, small size, light weight, anti-causticity, anti-electromagnetic, high sensitivity, strong reliability, and ease to form a quasi-distributed sensing system. 3. However, the bare FBG is thin and brittle, and its usual pressure sensitivity is only 0.003 nm/MPa [5], which cannot meet the requirements of engineering application and must adopt the appropriate packaging technology and methods in the actual measurement. 4. However, some methods have complex structures which are hard to be fabricated and multiplexed in one single optic fiber. 5. The performance experiments indicated that the FBG pressure sensor has good linearity, low frequency chirp, and high stability, and the temperature cross-sensitivity is effectively avoided, which can provide guidance for the design and manufacture of the sensors, and also can be used to measure pressure in mining engineering, civil engineering, or other complex environment 6. The temperature compensation FBG (TC FBG) is pasted in the casing to compensate temperature, which is connected with the PS FBG through the coupler. 7. According to (5), the effect of temperature variation on the strain measurement can be solved, which overcomes the problem of cross-sensitivity of the strain and temperature. We can get a higher sensitivity 8. whitch indicates that we should increase the sensitivity and maintain the structure size in the practical optimized design of the sensor in order to achieve a good performance [28] Materi clause b.inggris Clause merupakan kata penghubung,contoh dari kata penghubung nyaa adalah: 1. Because 2. If 3. But 4. That 5. Whom 6. Whose 7. Which Clause di bagi menjadi beberapa bentuk diantaranya: 1. Adverbia clause ( Connector S V) 2. Adjective clause (S Connector S V) 3. Adjective clause withat subject ( S V Connector V) 4. Noun clause 5. Noun clause withat subject