A novel temperature-insensitive long-period fiber grating using a boron-codoped-germanosilicate-core fiber

2002 ◽  
Author(s):  
K. Shima ◽  
K. Himeno ◽  
T. Sakai ◽  
S. Okude ◽  
A. Wada ◽  
...  
Keyword(s):  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Core Fiber ◽  
Period Fiber Grating

Bend Vector Sensor Based on Long Period Fiber Grating Inscribed in Mismatched Twin Core Fiber

2017 ◽  
Vol 46 (10) ◽  
pp. 1006002
Author(s):  
王标 WANG Biao ◽  
庞璐 PANG Lu ◽  
张伟刚 ZHANG Wei-gang ◽  
梁小红 LIANG Xiao-hong ◽  
宁鼎 NING Ding ◽  
...  
Keyword(s):  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Vector Sensor ◽  
Core Fiber ◽  
Period Fiber Grating

Twin-Core Fiber-Based Long-Period Fiber Grating and Its Coupling Characteristics

2010 ◽  
Vol 30 (12) ◽  
pp. 3391-3397
Author(s):  
王雪 Wang Xue ◽  
路密芳 Lu Mifang ◽  
杨军 Yang Jun ◽  
苑立波 Yuan Libo
Keyword(s):  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Core Fiber ◽  
Coupling Characteristics ◽  
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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