Few-mode fiber-embedded long-period fiber grating for simultaneous measurement of refractive index and temperature

2020 ◽  
Vol 59 (29) ◽  
pp. 9248
Author(s):  
Shuo Zhang ◽  
Xiang Li ◽  
Huiwen Niu ◽  
Qi Yan ◽  
Cuiting Sun ◽  
...  
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

Reflection-based phase-shifted long period fiber grating for simultaneous measurement of temperature and refractive index

2013 ◽  
Vol 52 (1) ◽  
pp. 014404 ◽  
Author(s):  
Jie Huang ◽  
Xinwei Lan ◽  
Amardeep Kaur ◽  
Hanzheng Wang ◽  
Lei Yuan ◽  
...  
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

Simultaneous Measurement of Strain and Temperature Using a Long-Period Fiber Grating with Rotary Refractive Index Modulation

2009 ◽  
Vol 36 (5) ◽  
pp. 1129-1133
Author(s):  
宋韵 Song Yun ◽  
朱涛 Zhu Tao ◽  
饶云江 Rao Yunjing ◽  
史翠华 Shi Cuihua ◽  
朱永 Zhu Yong
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Fiber Grating ◽  
Refractive Index Modulation ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating ◽  
Index Modulation

Reflective long-period fiber grating-based sensor with Sagnac fiber loop mirror for simultaneous measurement of refractive index and temperature

2014 ◽  
Vol 53 (29) ◽  
pp. H85 ◽  
Author(s):  
Jianying Yuan ◽  
Chun-Liu Zhao ◽  
Yumeng Zhou ◽  
Xiangdong Yu ◽  
Juan Kang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Fiber Loop Mirror ◽  
Loop Mirror ◽  
Period Fiber Grating ◽  
Fiber Loop

Long-Period Fiber Grating Cascaded to an S Fiber Taper for Simultaneous Measurement of Temperature and Refractive Index

2013 ◽  
Vol 25 (9) ◽  
pp. 888-891 ◽  
Author(s):  
Jieliang Li ◽  
Weigang Zhang ◽  
Shecheng Gao ◽  
Pengcheng Geng ◽  
Xiaolin Xue ◽  
...  
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Fiber Taper ◽  
Period Fiber Grating

Long-period fiber grating cascaded to thin-core fiber for simultaneous measurement of liquid refractive-index and temperature

Sensor Review ◽  
2018 ◽  
Vol 38 (1) ◽  
pp. 79-83 ◽  
Author(s):  
Meng Jiang ◽  
Ze-Ming Wang ◽  
Zhong-Ze Zhao ◽  
Kun Li ◽  
Fu Yang
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Fiber Sensor ◽  
Fiber Grating ◽  
Content Type ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Core Fiber ◽  
Cladding Mode ◽  
Period Fiber Grating

Purpose The purpose of this paper is to demonstrate a simple fiber sensor for simultaneous measurement of liquid refractive-index (RI) and temperature. Design/methodology/approach The sensor structure is formed by a long period fiber grating cascaded with a section of thin-core fiber. The long period fiber grating is fabricated on single mode fiber, followed by a section of 20-mm length thin-core fiber which is a modal interferometer. Findings Cladding mode interference between long period fiber grating and thin-core fiber modal interferometer is weak in the experimental investigation. Both of these two cladding mode type fiber devices are sensitive to surrounding RI and temperature. So the RI and temperature can be measured simultaneously by monitoring the spectral characteristics of the compound sensor. The sensitivity is calibrated and sensor matrix is provided in the experiment. Originality/value This proposed fiber sensor is simple, tough, cost-effective and suitable for discriminate the liquid RI and temperature with high sensitivity.

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