scholarly journals Simultaneous Measurement of Temperature and Curvature Using Ring-Core Fiber-based Mach-Zehnder Interferometer

2021 ◽  
Author(s):  
Weihao YUAN ◽  
Qiancheng zhao ◽  
Lingduo Li ◽  
Yu WANG ◽  
Changyuan Yu
Keyword(s):  
Simultaneous Measurement ◽  
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 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

In-line Mach-Zehnder interferometer for simultaneous measurement of temperature and directional torsion

Optik ◽  
2021 ◽  
Vol 226 ◽  
pp. 165497
Author(s):  
Fan Zhang ◽  
Ronghui Xu ◽  
Jinpeng Wei ◽  
Yichun Li ◽  
Zhuo Song ◽  
...  
Keyword(s):  
Simultaneous Measurement ◽  
Zehnder Interferometer ◽  
Mach Zehnder Interferometer
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