Large refractive index modulation based on BDK-doped step-index PMMA optical fiber for highly reflective Bragg grating inscription

2021 ◽  
Author(s):  
Xuehao Hu ◽  
Xiaoyu Yue ◽  
Xin Cheng ◽  
Shixin Gao ◽  
Rui Min ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Bragg Grating ◽  
Refractive Index Modulation ◽  
Step Index ◽  
Index Modulation

scholarly journals Quantitative investigation of the refractive-index modulation within the core of a fiber Bragg grating

2006 ◽  
Vol 14 (22) ◽  
pp. 10332 ◽  
Author(s):  
Betty P. Kouskousis ◽  
Claire M. Rollinson ◽  
Daniel J. Kitcher ◽  
Stephen F. Collins ◽  
Greg W. Baxter ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Refractive Index Modulation ◽  
Quantitative Investigation ◽  
The Core ◽  
Index Modulation

Optical fiber micro-displacement sensor using a refractive index modulation window-assisted reflection fiber taper

2017 ◽  
Vol 405 ◽  
pp. 276-280 ◽  
Author(s):  
Weijia Bao ◽  
Xueguang Qiao ◽  
Xunli Yin ◽  
Qiangzhou Rong ◽  
Ruohui Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Displacement Sensor ◽  
Refractive Index Modulation ◽  
Fiber Taper ◽  
Index Modulation

Optical properties of a photopolymer with large refractive index modulation for holographic application

2004 ◽  
Author(s):  
Chang-Won Shin ◽  
Nam Kim ◽  
Won-Sun Kim ◽  
Yong-Cheol Jeong ◽  
Jung-Ki Park
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Refractive Index Modulation ◽  
Index Modulation

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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