scholarly journals Laser interrogation techniques for high-sensitivity strain sensing by fiber-Bragg-grating structures

2017 ◽  
Author(s):  
G. Gagliardi ◽  
M. Salza ◽  
P. Ferraro ◽  
P. De Natale
Keyword(s):  
Fiber Bragg Grating ◽  
High Sensitivity ◽  
Bragg Grating ◽  
Strain Sensing ◽  
Interrogation Techniques

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.

scholarly journals Static fiber-Bragg grating strain sensing using frequency-locked lasers

1999 ◽  
Vol 17 (10) ◽  
pp. 1849-1855 ◽  
Author(s):  
A. Arie ◽  
B. Lissak ◽  
M. Tur
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Strain Sensing

Sagnac fiber interferometer with the population grating for fiber Bragg grating dynamic strain sensing

2021 ◽  
Vol 17 (12) ◽  
pp. 723-728
Author(s):  
Wei Wang ◽  
Chuanyi Tao ◽  
Hao Wang ◽  
Xuhai Jiang ◽  
Rong Chen ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Dynamic Strain ◽  
Bragg Grating ◽  
Strain Sensing

scholarly journals Design and Modeling of a High Sensitivity Fiber Bragg Grating-Based Accelerometer

2019 ◽  
Vol 19 (14) ◽  
pp. 5439-5445
Author(s):  
Qinpeng Liu ◽  
Xue He ◽  
Xueguang Qiao ◽  
Tong Sun ◽  
Kenneth T. V. Grattan
Keyword(s):  
Fiber Bragg Grating ◽  
High Sensitivity ◽  
Bragg Grating
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