scholarly journals Multiple mode transmission mechanism based optical fiber refractive index sensor with high sensitivity and large dynamic range

2021 ◽  
Author(s):  
Ran Gao ◽  
Yongjun Wang ◽  
Xiangjun Xin
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Transmission Mechanism ◽  
Refractive Index Sensor ◽  
Large Dynamic Range ◽  
Multiple Mode

Optical fiber refractive index sensor with low detection limit and large dynamic range using a hybrid fiber interferometer

2019 ◽  
pp. 1-1 ◽  
Author(s):  
Xuegang Li ◽  
Stephen Christopher Warren-Smith ◽  
Heike Ebendorff-Heidepriem ◽  
Ya-nan Zhang ◽  
Linh Viet Nguyen
Keyword(s):  
Refractive Index ◽  
Detection Limit ◽  
Optical Fiber ◽  
Dynamic Range ◽  
Refractive Index Sensor ◽  
Large Dynamic Range ◽  
Hybrid Fiber ◽  
Low Detection Limit

scholarly journals Simultaneous Measurement of Temperature and Refractive Index Using High Temperature Resistant Pure Quartz Grating Based on Femtosecond Laser and HF Etching

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1028
Author(s):  
Na Zhao ◽  
Qijing Lin ◽  
Kun Yao ◽  
Fuzheng Zhang ◽  
Bian Tian ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Temperature ◽  
Femtosecond Laser ◽  
Optical Fiber ◽  
Temperature Response ◽  
High Sensitivity ◽  
Xrd Analysis ◽  
Refractive Index Sensor ◽  
Compact Structure ◽  
Fluid Analysis

The optical fiber temperature and refractive index sensor combined with the hollow needle structure for medical treatment can promote the standardization of traditional acupuncture techniques and improve the accuracy of body fluid analysis. A double-parameter sensor based on fiber Bragg grating (FBG) is developed in this paper. The sensor materials are selected through X-ray diffraction (XRD) analysis, and the sensor sensing principle is theoretically analyzed and simulated. Through femtosecond laser writing pure silica fiber, a high temperature resistant wavelength type FBG temperature sensor is obtained, and the FBG is corroded by hydrofluoric acid (HF) to realize a high-sensitivity intensity-type refractive index sensor. Because the light has dual characteristics of energy and wavelength, the sensor can realize simultaneous dual-parameter sensing. The light from the lead-in optical fiber is transmitted to the sensor and affected by temperature and refractive-index; then, the reflection peak is reflected back to the lead-out fiber by the FBG. The high temperature response and the refractive index response of the sensor were measured in the laboratory, and the high temperature characteristics of the sensor were verified in the accredited institute. It is demonstrated that the proposed sensor can achieve temperature sensing up to 1150 °C with the sensitivity of 0.0134 nm/°C, and refractive sensing over a refractive range of 1.333 to 1.4027 with the sensitivity of −49.044 dBm/RIU. The sensor features the advantages of two-parameter measurement, compact structure, and wide temperature range, and it exhibits great potential in acupuncture treatment.

scholarly journals High sensitivity refractive index sensor based on adiabatic tapered optical fiber deposited with nanofilm by ALD

2015 ◽  
Vol 23 (11) ◽  
pp. 13880 ◽  
Author(s):  
Shan Zhu ◽  
Fufei Pang ◽  
Sujuan Huang ◽  
Fang Zou ◽  
Yanhua Dong ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Tapered Optical Fiber

Improved optical fiber Mach-Zehnder high-sensitivity refractive index sensor

Optik ◽  
2020 ◽  
pp. 166214
Author(s):  
Yongfeng Wu ◽  
Bo Liu ◽  
Tong Nan ◽  
Jing Wu ◽  
Yaya Mao ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
High Sensitivity ◽  
Refractive Index Sensor

scholarly journals High-sensitivity and large-dynamic-range refractive index sensors employing weak composite Fabry–Perot cavities

2017 ◽  
Vol 42 (16) ◽  
pp. 3145 ◽  
Author(s):  
Pengcheng Chen ◽  
Xuewen Shu ◽  
Haoran Cao ◽  
Kate Sugden
Keyword(s):  
Refractive Index ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Large Dynamic Range ◽  
Fabry Perot ◽  
Refractive Index Sensors

A high sensitivity D-type surface plasmon resonance optical fiber refractive index sensor with graphene coated silver nano-columns

2019 ◽  
Vol 48 ◽  
pp. 34-39 ◽  
Author(s):  
Haiwei Fu ◽  
Min Zhang ◽  
Jijun Ding ◽  
Jie Wu ◽  
Yi Zhu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
High Sensitivity ◽  
Refractive Index Sensor

scholarly journals High Sensitivity Refractive Index Sensor Based on the Excitation of Long-Range Surface Plasmon Polaritons in H-Shaped Optical Fiber

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2111 ◽  
Author(s):  
Nelson Gomez-Cardona ◽  
Erick Reyes-Vera ◽  
Pedro Torres
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Long Range ◽  
Surface Plasmon ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Promising Alternative ◽  
Sensor Performance ◽  
Wide Range ◽  
Sensor Structure

In this paper, we propose and numerically analyze a novel design for a high sensitivity refractive index (RI) sensor based on long-range surface plasmon resonance in H-shaped microstructured optical fiber with symmetrical dielectric–metal–dielectric waveguide (DMDW). The influences of geometrical and optical characteristics of the DMDW on the sensor performance are investigated theoretically. A large RI analyte range from 1.33 to 1.39 is evaluated to study the sensing characteristics of the proposed structure. The obtained results show that the DMDW improves the coupling between the fiber core mode and the plasmonic mode. The best configuration shows 27 nm of full width at half maximum with a resolution close to 1.3 × 10 − 5 nm, a high sensitivity of 7540 nm/RIU and a figure of merit of 280 RIU − 1 . Additionally, the proposed device has potential for multi-analyte sensing and self-reference when dissimilar DMDWs are deposited on the inner walls of the side holes. The proposed sensor structure is simple and presents very competitive sensing parameters, which demonstrates that this device is a promising alternative and could be used in a wide range of application areas.

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