Highly efficient free-space fiber coupler with 45° tilted fiber grating to access remotely placed optical fiber sensors

Bandyopadhyay，Sankhyabrata1; Shao，Li Yang1,2; Chao，Wang3; Yan，Zhijun4; Hong，Fei1; Wang，Guoqing1; Jiang，Jiahao1; Shum，Ping1; Hong，Xiaoping5; Wang，Weizhi2

2020-05-25

10.1364/OE.392170

OPTICS EXPRESS   影响因子和分区

1094-4087

1094-4087

In this work, a 45° tilted fiber grating (TFG) is used as a waveguide coupler for the development of a portable interrogation system to access remotely placed optical fiber sensors. The TFG is directly connected to a remote fiber sensor and serves as a highly efficient light coupler between the portable interrogation unit and the sensor. Variation of strain and temperatures are measured with a standard fiber Bragg grating (FBG) sensor, which serves as a remotely placed optical sensor. A light beam from the interrogation unit is coupled into the TFG by a system of lenses, mirrors and optical collimator and acted as the input of the FBG. Reflected light from the FBG sensor is coupled back to the interrogation unit via the same TFG. The TFG is being used as a receiver and transmitter of light and constituent the key part of the system to connect “light source to the optical sensor” and “optical sensor to detector.” A successful demonstration of the developed system for strain and temperature sensing applications have been presented and discussed. Signal to noise ratio of the reflected light from the sensors was greater than ∼ 40 dB.

SCI ; EI

英语

第一

Southern University of Science and Technology[Y01236128]

Optics

Optics

WOS:000542303000065

OPTICAL SOC AMER

20202208763879

Lenses ; Signal to noise ratio ; Fiber optic sensors ; Cost effectiveness ; Light sources

Information Theory and Signal Processing:716.1 ; Fiber Optics:741.1.2 ; Optical Devices and Systems:741.3 ; Industrial Economics:911.2

PHYSICS

2-s2.0-85085524345

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen, Guangdong,,518055,China
2.Peng Cheng Laboratory,Shenzhen , Guangdong,518055,China
3.School of Engineering and Digital Arts,University of Kent,Canterbury,CT2 7NT,United Kingdom
4.School of Optical and Electronic Information,NGIA,Huazhong University of Science and Technology,Wuhan , Hubei,430074,China
5.Department of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen, Guangdong,518055,China

Bandyopadhyay，Sankhyabrata,Shao，Li Yang,Chao，Wang,et al. Highly efficient free-space fiber coupler with 45° tilted fiber grating to access remotely placed optical fiber sensors[J]. OPTICS EXPRESS,2020,28(11):16569-16578.

Bandyopadhyay，Sankhyabrata.,Shao，Li Yang.,Chao，Wang.,Yan，Zhijun.,Hong，Fei.,...&Wang，Weizhi.(2020).Highly efficient free-space fiber coupler with 45° tilted fiber grating to access remotely placed optical fiber sensors.OPTICS EXPRESS,28(11),16569-16578.

Bandyopadhyay，Sankhyabrata,et al."Highly efficient free-space fiber coupler with 45° tilted fiber grating to access remotely placed optical fiber sensors".OPTICS EXPRESS 28.11(2020):16569-16578.