Refractive-index-sensing RF comb using intra-cavity multi-mode interference fiber sensor

2018 ◽  
Author(s):  
Ryo Oe ◽  
Kosuke Nagai ◽  
Takeo Minamikawa ◽  
Shuji Taue ◽  
Hideki Fukano ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Sensor ◽  
Refractive Index Sensing ◽  
Multi Mode ◽  
Mode Interference

scholarly journals Refractive-index-sensing optical comb based on photonic radio-frequency conversion with intracavity multi-mode interference fiber sensor

2018 ◽  
Vol 26 (15) ◽  
pp. 19694 ◽  
Author(s):  
Ryo Oe ◽  
Shuji Taue ◽  
Takeo Minamikawa ◽  
Kosuke Nagai ◽  
Kyuki Shibuya ◽  
...  
Keyword(s):  
Refractive Index ◽  
Radio Frequency ◽  
Frequency Conversion ◽  
Fiber Sensor ◽  
Refractive Index Sensing ◽  
Multi Mode ◽  
Mode Interference

Thin-Core Fiber Taper-Based Multi-Mode Interferometer for Refractive Index Sensing

2018 ◽  
Vol 18 (21) ◽  
pp. 8747-8754 ◽  
Author(s):  
Yujie Kong ◽  
Xuewen Shu ◽  
Haoran Cao ◽  
Jiancheng Deng
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensing ◽  
Fiber Taper ◽  
Core Fiber ◽  
Multi Mode

scholarly journals Integrated Mach–Zehnder Interferometer Based on Liquid Crystal Evanescent Field Tuning

Crystals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 225 ◽  
Author(s):  
Manuel Caño-García ◽  
David Poudereux ◽  
Fernando J. Gordo ◽  
Morten A. Geday ◽  
José M. Otón ◽  
...  
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Visible Region ◽  
Fine Tuning ◽  
Zehnder Interferometer ◽  
Rectangular Waveguides ◽  
Multi Mode ◽  
Mode Interference ◽  
Cladding Material ◽  
Mach Zehnder Interferometer

In this work, the performance of a Mach–Zehnder interferometer manufactured in silicon nitride with a liquid crystal cladding is studied. The device consists of two multi-mode interference couplers linked by two rectangular waveguides, the cladding of one of which is a liquid crystal. The structure demonstrates the potential of using liquid crystals as tunable cladding material in simple waveguides as well as in more complex coupling or modulating structures. Liquid crystal cladding permits a local fine-tuning of the effective refractive index of the waveguide, avoiding coarse global temperature control. The study is realized in the visible region (632.8 nm), for its intrinsic interest region in (bio-)sensing or metrology.

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