Filament-Based Fabrication and Performance Analysis of Fiber Bragg Grating Sensors Using Ultrashort Pulse Laser

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Farid Ahmed ◽  
Martin B. G. Jun
Keyword(s):  
Refractive Index ◽  
Performance Analysis ◽  
Fiber Bragg Grating ◽  
Contact Force ◽  
Ultrashort Pulse ◽  
Axial Strain ◽  
Single Mode ◽  
Force Sensor ◽  
Bragg Grating ◽  
Refractive Index Modulation

The method of ultrashort pulse filamentation induced refractive index modification is employed to inscribe fiber Bragg grating (FBG) in single-mode optical fiber (SMF). Line-by-line index inscription technique is used to write refractive index modulation in the core of SMF. The proposed pulse filamentation based index modification enables controlled and flexible writing of FBGs in optical fibers. Performance analysis of the fabricated FBG has been carried out for temperature, contact force, pressure, and axial strain sensing. The in-fiber FBG exhibits sensing performance very similar to FBGs commercially available to date. Then, the written FBG is engineered to demonstrate highly sensitive contact force sensor.

scholarly journals High Sensitive FBG Based Muscular Strain Sensor

2017 ◽  
Vol 6 (2) ◽  
pp. 71 ◽  
Author(s):  
R. D. Koozekanani ◽  
S. Makouei
Keyword(s):  
Fiber Bragg Grating ◽  
Axial Strain ◽  
Strain Sensor ◽  
Single Mode ◽  
Bone Diseases ◽  
Bragg Grating ◽  
Biomechanical Behavior ◽  
Musculoskeletal Structure ◽  
The One ◽  
Bragg Grating Sensor

Assessment of biomechanical behavior of human musculoskeletal structure is essential to recognize bone diseases and to design proper medical devices.  The skeleton system basically adapts to mechanical loadings. Thus, monitoring the bone deformation under load is of great importance to attain better analysis and interpretation.  In recent years, Fiber Bragg Grating sensing devices have been developed and used to monitor strain and temperature of skeleton system.  In this work a Fiber Bragg Grating sensor is designed holding a 1.54 pmµε-1 axial strain sensitivity which is almost 30% higher than the one achieved so far.  The improvement in sensitivity is achieved by adjusting single-mode optical fiber parameters of the structure.

Simultaneous Measurement of Temperature and Refractive Index Using a Fiber Bragg Grating and a Multimode Fiber

2011 ◽  
Vol 130-134 ◽  
pp. 4053-4056
Author(s):  
Zheng Rong Tong ◽  
Yang Guo ◽  
Xiu Feng Yang ◽  
Ye Cao
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Simultaneous Measurement ◽  
High Sensitivity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Grating ◽  
Multimode Fiber ◽  
Compact Size ◽  
Good Operation

We introduce an all-fiber sensor capable of simultaneous measurement of temperature and refractive index (RI). The sensor system consists of a single mode fiber Bragg grating (FBG) and a single-mode-multimode-single-mode (SMS) structure which serves as a Mach-Zehnder interferometer (MZI), and the multimode fiber (MMF) is etched by hydrofluoric acid solution. The experimental results demonstrate that the temperature sensitivities of FBG and MZI are 0.016nm/°C and 0.093nm/°C, respectively, and the RI sensitivity of MZI achieves 226.25nm/RIU. The interesting properties of the sensor include compact size, high sensitivity and good operation linearity.

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

Performance Analysis of Uniform Fiber Bragg Grating

2013 ◽  
Vol 397-400 ◽  
pp. 1984-1987
Author(s):  
Li Li Wang ◽  
Xiang Yan Qiu ◽  
Qiu Ming Ma
Keyword(s):  
Performance Analysis ◽  
Fiber Bragg Grating ◽  
Bragg Grating

In this paper the fundamental characteristics of fiber Bragg grating was described. The important parameters such as the length of fiber gratinggrating periodwhich strongly affected the characteristics of fiber Bragg grating were analyzed.

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