Research of the Ultra-Thin Fiber Bragg Grating Hydrophone

2012 ◽  
Vol 500 ◽  
pp. 682-688
Author(s):  
Jun Bin Huang ◽  
Yu Li ◽  
Hong Can Gu ◽  
Bo Tan
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Bragg Reflection ◽  
Acoustic Signals ◽  
Distributed Feedback ◽  
Bragg Grating ◽  
Underwater Acoustic ◽  
Thin Fiber ◽  
Distributed Bragg Reflection

In this paper, the basic theories and characteristics of distributed Bragg reflection (DBR) fiber laser and distributed feedback (DFB) fiber laser as hydrophone were described and analyzed; The interferometric demodulation technique of the underwater acoustic signals from fiber Bragg grating (FBG) hydrophone was discussed; And the theoretical experimental conclusions of the ultra-thin fiber Bragg grating hydrophone were introduced; Finally, the application in the torpedo homing field of the research on the ultra-thin fiber Bragg grating hydrophone were prospected.

Distributed feedback fiber laser based on a fiber Bragg grating inscribed using the femtosecond point-by-point technique

2018 ◽  
Vol 15 (3) ◽  
pp. 035103 ◽  
Author(s):  
M I Skvortsov ◽  
A A Wolf ◽  
A V Dostovalov ◽  
A A Vlasov ◽  
V A Akulov ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Distributed Feedback ◽  
Bragg Grating

scholarly journals Wavelength-Switchable Single-Longitudinal- Mode Thulium-Doped Fiber Laser With Sampled Fiber Bragg Grating

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 62212-62218
Author(s):  
Wenguo Han ◽  
Fengping Yan ◽  
Ting Feng ◽  
Luna Zhang ◽  
Biao Guan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Longitudinal Mode ◽  
Single Longitudinal Mode ◽  
Bragg Grating ◽  
Sampled Fiber Bragg Grating

Dual-Wavelength 2- Fiber Laser With Coupled Fiber Bragg Grating Cavities

2016 ◽  
Vol 28 (11) ◽  
pp. 1193-1196 ◽  
Author(s):  
Yao Wang ◽  
Yan Zhou ◽  
Shuo Yan ◽  
Yulong Tang ◽  
Jianqiu Xu
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Dual Wavelength ◽  
Bragg Grating

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.

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