Sagnac interferometer based on low-birefringence photonic crystal fiber for strain measurement

2010 ◽  
Author(s):  
Huaping Gong ◽  
Chi Chiu Chan ◽  
Yongxing Jin ◽  
Xinyong Dong
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Strain Measurement ◽  
Sagnac Interferometer ◽  
Crystal Fiber

scholarly journals Highly sensitive photonic crystal fiber salinity sensor based on Sagnac interferometer

2020 ◽  
Vol 16 ◽  
pp. 103022 ◽  
Author(s):  
Md. Aslam Mollah ◽  
Md. Yousufali ◽  
Md. Rifat Bin Asif Faysal ◽  
Md. Rabiul Hasan ◽  
Md. Biplob Hossain ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Sagnac Interferometer ◽  
Crystal Fiber ◽  
Highly Sensitive

scholarly journals Liquid-Filled Highly Asymmetric Photonic Crystal Fiber Sagnac Interferometer Temperature Sensor

Photonics ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 33 ◽  
Author(s):  
Yashar E. Monfared ◽  
Amir Ahmadian ◽  
Vigneswaran Dhasarathan ◽  
Chunhao Liang
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Temperature Sensor ◽  
The Finite Element Method ◽  
Sagnac Interferometer ◽  
Linear Temperature ◽  
Modal Birefringence ◽  
Ambient Temperatures ◽  
Crystal Fiber ◽  
Fiber Design

In this paper, we theoretically designed and numerically studied a high-resolution and ultrasensitive photonic crystal fiber temperature sensor by selective filling of a liquid with high thermo-optic coefficient in one of the airholes of the fiber. The finite element method was utilized to study the propagation characteristics and the modal birefringence of the fiber under different ambient temperatures. A large base birefringence value of 7.7 × 10−4 as well as a large birefringence sensitivity of almost 29% to a 10 °C temperature variation was achieved for the optimized fiber design with liquid chloroform between 15 °C and 35 °C. We also studied the performance of the proposed optical fiber in a temperature sensing Sagnac interferometer. An average linear temperature sensitivity of 17.53 nm/°C with an average resolution of 5.7 × 10−4 °C was achieved over a temperature range of 20 °C (15 °C to 35 °C).

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