A high sensitivity refractive index sensor based on photonic crystal fibre Mach–Zehnder interferometer

2017 ◽  
Vol 64 (16) ◽  
pp. 1639-1647 ◽  
Author(s):  
Qi Wang ◽  
Wanming Zhao ◽  
Botao Wang ◽  
Haifeng Hu ◽  
Jin Li
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
High Sensitivity ◽  
Zehnder Interferometer ◽  
Refractive Index Sensor ◽  
Photonic Crystal Fibre ◽  
Mach Zehnder Interferometer

High Sensitivity Refractive Index Sensor Based on Long Period Fiber Gratings in Line Mach-Zehnder Interferometer

2013 ◽  
Vol 658 ◽  
pp. 609-613 ◽  
Author(s):  
Jia Rong Zheng ◽  
Yong Qin Yu ◽  
Zhi Long Ou ◽  
Chen Lin Du ◽  
Pei Guang Yan ◽  
...  
Keyword(s):  
Refractive Index ◽  
Temperature Response ◽  
High Sensitivity ◽  
Zehnder Interferometer ◽  
Refractive Index Sensor ◽  
Fiber Gratings ◽  
Refractive Index Measurement ◽  
Long Period ◽  
Long Period Fiber Gratings ◽  
Mach Zehnder Interferometer

Mach-Zehnder interferometer formed by a pair of long period fiber gratings on single mode fiber is investigated as surrounding refractive index sensors. Interference fringes with bandwidth of 1.68 nm are induced by core mode and the excited cladding mode. High SRI sensitivity of 280.74 nm/RIU at 1437.74 nm in the range of 1.333 to 1.360 is achieved. Whilst the strain sensitivity (~0.33 nm/mε) and temperature response (~20.7 pm/°C) at 1428.64 nm are relatively low, which is superior in avoiding cross sensitivity in refractive index measurement.

scholarly journals In-line Mach-Zehnder Interferometer based on Hybrid Structures for Refractive Index Sensin

2019 ◽  
Vol 8 (3S) ◽  
pp. 36-40
Keyword(s):  
Refractive Index ◽  
High Sensitivity ◽  
Single Mode ◽  
Cost Effective ◽  
Single Mode Fiber ◽  
Zehnder Interferometer ◽  
Refractive Index Sensor ◽  
Compact Size ◽  
Index Changes ◽  
Mach Zehnder Interferometer

A Mach-Zehnder interferometer (MZI) built using several concatenated different structures is proposed as a refractive index sensor. This sensor is comprised of a microbubble, a section of reduced cladding fiber (RCF) and a core-offset single-mode fiber (SMF). These structures are joined together through specialized arc fusion splicing procedures. The sensor is characterised by immersing it in Cargille oil with refractive index values ranging from 1.30 to 1.39. The sensor exhibits linearity in respect to the refractive index changes, with a good sensitivity of 144.42 nm/RIU. The proposed MZI has the advantages of cost effective, repeatable fabrication, compact size and high sensitivity, which make it a promising sensor.

Photonic Crystal Fiber Mach-Zehnder Interferometer Based on Refractive Index Sensitivity of Cladding Corrosion Optimization

2019 ◽  
Vol 56 (17) ◽  
pp. 170629
Author(s):  
黄国家 Guojia Huang ◽  
马诗章 Shizhang Ma ◽  
王恋 Lian Wang ◽  
李仕平 Shiping Li ◽  
冯文林 Wenlin Feng
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Zehnder Interferometer ◽  
Refractive Index Sensitivity ◽  
Crystal Fiber ◽  
Index Sensitivity ◽  
Mach Zehnder Interferometer
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