scholarly journals Micro-fiber Mach–Zehnder interferometer based on ring-core fiber

2019 ◽  
Vol 27 (24) ◽  
pp. 34603
Author(s):  
Xuan Li ◽  
Nan-Kuang Chen ◽  
Lixia Xi ◽  
Hu Zhang ◽  
Xiaoguang Zhang ◽  
...  
Keyword(s):  
Zehnder Interferometer ◽  
Core Fiber ◽  
Ring Core ◽  
Mach Zehnder Interferometer

scholarly journals Dual Demodulation of Temperature and Refractive Index Using Ring Core Fiber Based Mach-Zehnder Interferometer

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 258
Author(s):  
Weihao Yuan ◽  
Changyuan Yu
Keyword(s):  
Refractive Index ◽  
Extinction Ratio ◽  
Linear Equations ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Zehnder Interferometer ◽  
Wavelength Shift ◽  
Core Fiber ◽  
Ring Core ◽  
Mach Zehnder Interferometer

We report the ring core fiber spliced with single mode fiber and no core fiber which is used for temperature and refractive index (RI) sensing. The Mach-Zehnder interferometer (MZI) is formed with this kind of sandwich fiber structure and the maximum extinction ratio of the interference spectra reaches 27 dB with the free spectra range of 12 nm. The MZI fiber sensor is applied for temperature sensing with the sensitivity of 69 pm/°C and 0.051 dB/°C. The RI sensitivity reaches 182.07 dB/RIU and −31.44 nm/RIU with the RI ranging from 1.33 to 1.38. The RI value can be directly demodulated with the interference dip intensity which shows insensitivity to temperature. The demodulation of temperature can be achieved by using the linear equations between dip wavelength shift with the variation of temperature and RI.

scholarly journals An in-line Mach-Zehnder Interferometer Using Thin-core Fiber for Ammonia Gas Sensing With High Sensitivity

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Xinyue Huang ◽  
Xueming Li ◽  
Jianchun Yang ◽  
Chuanyi Tao ◽  
Xiaogang Guo ◽  
...  
Keyword(s):  
Gas Sensing ◽  
High Sensitivity ◽  
Zehnder Interferometer ◽  
Ammonia Gas ◽  
Core Fiber ◽  
Mach Zehnder Interferometer
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