Compact Fiber Optic Sensors for Dual Temperature and Refractive Index Profiling Based on Partially Etched Chirped Fiber Bragg Grating

2018 ◽  
Author(s):  
Sanzhar Korganbayev ◽  
Aliya Bekmurzayeva ◽  
Madina Shaimerdenova ◽  
Takhmina Ayunova ◽  
Carlo Molardi ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Bragg Grating ◽  
Chirped Fiber Bragg Grating

Detection of tilted fiber Bragg grating fiber-optic sensors with short-term KLT: towards low-cost biosensors

2018 ◽  
Author(s):  
Madina Shaimerdenova ◽  
Aliya Bekmurzayeva ◽  
Marzhan Sypabekova ◽  
Yntymak Abukhanov ◽  
Daniele Tosi
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Low Cost ◽  
Fiber Optic Sensors ◽  
Bragg Grating ◽  
Short Term

scholarly journals Fiber Bragg grating fabrication by femtosecond laser radiation

2019 ◽  
Vol 220 ◽  
pp. 03007
Author(s):  
Anton Chernikov ◽  
Dmitriy Kochuev ◽  
Kirill Khorkov ◽  
Ruslan Chkalov ◽  
Nikolay Davydov
Keyword(s):  
Laser Radiation ◽  
Femtosecond Laser ◽  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Optic Sensors ◽  
Bragg Grating ◽  
Femtosecond Laser Radiation ◽  
Grating Fabrication

The paper presents the results of fiber Bragg gratings fabrication by femtosecond laser radiation using point-by-point and line-by-line inscription methods. The approach makes it possible to fabricate the second and higher diffraction orders fiber Bragg gratings, which can be used as sensitive elements of fiber-optic sensors.

scholarly journals Shallow-Tapered Chirped Fiber Bragg Grating Sensors for Dual Refractive Index and Temperature Sensing

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3635
Author(s):  
Takhmina Ayupova ◽  
Madina Shaimerdenova ◽  
Daniele Tosi
Keyword(s):  
Refractive Index ◽  
Spectral Analysis ◽  
Fiber Bragg Grating ◽  
Thermal Characteristics ◽  
Temperature Sensing ◽  
Bragg Grating ◽  
Fiber Bragg Grating Sensors ◽  
Thermal Changes ◽  
Chirped Fiber Bragg Grating

In this work, we present a gold-coated shallow-tapered chirped fiber Bragg grating (stCFBG) for dual refractive index (RI) and temperature sensing. The stCFBG has been fabricated on a 15-mm long chirped FBG, by tapering a 7.29-mm region with a waist of 39 μm. The spectral analysis shows two distinct regions: a pre-taper region, in which the stCFBG is RI-independent and can be used to detect thermal changes, and a post-taper region, in which the reflectivity increases significantly when the RI increments. We estimate the RI and thermal sensitivities as 382.83 dB/RIU and 9.893 pm/°C, respectively. The cross-talk values are low (−1.54 × 10−3 dB/°C and 568.1 pm/RIU), which allows an almost ideal separation between RI and thermal characteristics. The stCFBG is a compact probe, suitable for long-term and temperature-compensated biosensing and detection of chemical analytes.

Detection of thermal gradients through fiber-optic Chirped Fiber Bragg Grating (CFBG): Medical thermal ablation scenario

2018 ◽  
Vol 41 ◽  
pp. 48-55 ◽  
Author(s):  
Sanzhar Korganbayev ◽  
Yerzhan Orazayev ◽  
Sultan Sovetov ◽  
Ali Bazyl ◽  
Emiliano Schena ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Thermal Ablation ◽  
Fiber Optic ◽  
Bragg Grating ◽  
Thermal Gradients ◽  
Chirped Fiber Bragg Grating

Detection of Tilted Fiber Bragg Grating Fiber-Optic Sensors with Short-Term KLT: Towards Low-Cost Biosensors

2018 ◽  
Author(s):  
Aliya Bekmurzayeva ◽  
Madina Shaimerdenova ◽  
Yntymak Abukhanov ◽  
Marzhan Sypabekova ◽  
Daniele Tosi
Keyword(s):  
Fiber Bragg Grating ◽  
Fiber Optic ◽  
Low Cost ◽  
Fiber Optic Sensors ◽  
Bragg Grating ◽  
Short Term
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