scholarly journals Highly sensitive fiber Bragg grating refractive index sensors

2005 ◽  
Vol 86 (15) ◽  
pp. 151122 ◽  
Author(s):  
Wei Liang ◽  
Yanyi Huang ◽  
Yong Xu ◽  
Reginald K. Lee ◽  
Amnon Yariv
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Highly Sensitive ◽  
Refractive Index Sensors

Demodulation of tilted fiber Bragg grating refractive index sensors with KLT

2017 ◽  
Author(s):  
Daniele Tosi ◽  
Madina Shaimerdenova ◽  
Aliya Bekmurzayeva ◽  
Marzhan Sypabekova
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Refractive Index Sensors

Development of an Optical Fiber Sensor with a D-shaped Fiber Bragg Grating Integrated in a Loop-mirror Optical Fiber Laser as a High Sensitivity Refractometer

2021 ◽  
Vol 32 ◽  
Author(s):  
Binh Pham Thanh ◽  
Thuy Van Nguyen ◽  
Van Hoi Pham ◽  
Huy Bui ◽  
Thi Hong Cam Hoang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Limit Of Detection ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Optical Signal ◽  
Bragg Grating ◽  
Loop Mirror

In this paper, we report a new type of refractometer based on a D-shaped fiber Bragg grating (FBG) integrated in a loop-mirror optical fiber laser. This proposed sensor is used in wavelength interrogation method, in which the D-shaped FBG is applied as a refractive index (RI) sensing probe and a mirror to select mode of laser. The D-shaped FBG is prepared by the removal of a portion of the fiber cladding covering the FBG by means of side-polishing technique. The D-shaped FBG sensing probe integrated in a loop-mirror optical fiber laser with saturated pump technique, the characteristics of sensing signals have been improved to obtain stable intensity, narrower bandwidth and higher optical signal-to-noise ratio compare to normal reflection configuration. The limit of detection (LOD) of this sensor can be achieved to 2.95 x 10-4 RIU in the refractive index (RI) range of 1.42-1.44. Accordingly, we believe that the proposed refractometer has a huge potential for applications in biochemical-sensing technique.

Refractive Index and Temperature Sensor Based on D-Shaped Fiber Combined With a Fiber Bragg Grating

2019 ◽  
Vol 19 (4) ◽  
pp. 1362-1367 ◽  
Author(s):  
Yue Dong ◽  
Shiying Xiao ◽  
Beilei Wu ◽  
Han Xiao ◽  
Shuisheng Jian
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Temperature Sensor ◽  
Bragg Grating
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