scholarly journals Mid Infrared Optical Gas Sensor Using Plasmonic Mach-Zehnder Interferometer

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Raghi S. El Shamy ◽  
Diaa Khalil ◽  
Mohamed A. Swillam
Keyword(s):  
Gas Sensor ◽  
Zehnder Interferometer ◽  
Mid Infrared ◽  
Optical Gas Sensor ◽  
Mach Zehnder Interferometer

Theoretical Design of Mid-Infrared Graphene Optical Gas Sensor Based on Slot Si Core Fiber

2019 ◽  
Vol 31 (13) ◽  
pp. 1096-1099 ◽  
Author(s):  
Jiaqi Wang ◽  
Yuzhi Chen ◽  
Youfu Geng ◽  
Xueming Hong ◽  
Xuejin Li
Keyword(s):  
Gas Sensor ◽  
Mid Infrared ◽  
Theoretical Design ◽  
Optical Gas Sensor ◽  
Core Fiber

On-Chip Integrated Mid-Infrared GaAs/AlGaAs Mach–Zehnder Interferometer

2012 ◽  
Vol 85 (6) ◽  
pp. 3050-3052 ◽  
Author(s):  
Markus Sieger ◽  
Franz Balluff ◽  
Xiaofeng Wang ◽  
Seong-Soo Kim ◽  
Lothar Leidner ◽  
...  
Keyword(s):  
Zehnder Interferometer ◽  
Mid Infrared ◽  
On Chip ◽  
Mach Zehnder Interferometer

scholarly journals Ultra-wideband Ge-rich silicon germanium integrated Mach–Zehnder interferometer for mid-infrared spectroscopy

2017 ◽  
Vol 42 (17) ◽  
pp. 3482 ◽  
Author(s):  
Vladyslav Vakarin ◽  
Joan Manel Ramírez ◽  
Jacopo Frigerio ◽  
Andrea Ballabio ◽  
Xavier Le Roux ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Silicon Germanium ◽  
Zehnder Interferometer ◽  
Ultra Wideband ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Mach Zehnder Interferometer

InGaAs Membrane Waveguide: A Promising Platform for Monolithic Integrated Mid-Infrared Optical Gas Sensor

ACS Sensors ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 861-869 ◽  
Author(s):  
Kyoung Min Yoo ◽  
Jason Midkiff ◽  
Ali Rostamian ◽  
Chi-jui Chung ◽  
Hamed Dalir ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Mid Infrared ◽  
Optical Gas Sensor

scholarly journals Compact Gas Sensor Using Silicon-on-Insulator Loop-Terminated Mach–Zehnder Interferometer

Photonics ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 8
Author(s):  
Raghi S. El Shamy ◽  
Mohamed A. Swillam ◽  
Mohamed M. ElRayany ◽  
Alaa Sultan ◽  
Xun Li
Keyword(s):  
Finite Difference ◽  
Gas Sensor ◽  
Large Scale ◽  
Near Infrared ◽  
Low Cost ◽  
Silicon On Insulator ◽  
Zehnder Interferometer ◽  
Slot Waveguide ◽  
Scale Production ◽  
Mach Zehnder Interferometer

In this paper, we propose a compact optical gas sensor based on the widespread silicon-on-insulator (SOI) technology, operating in the near-infrared (NIR) region around the 1.55 µm wavelength. The sensor employs a loop-terminated Mach–Zehnder interferometer (LT-MZI) with a slot waveguide and a strip waveguide for the sensing arm and the reference arm, respectively. For the same arm length, the LT-MZI can achieve a detection limit two times lower than that of the conventional MZI. Different sensor components were designed, and the optimum dimensions were obtained using finite-difference eigenmode (FDE) and finite-difference time-domain (FDTD) solvers. With a sensing arm length of only 150 μm, our sensor achieves a device sensitivity of 1070 nm/RIU and a figure-of-merit (FOM) as high as 280.8 RIU−1 at the 1.55 μm wavelength. Higher values of FOM can be attained by employing a longer sensing arm. The whole sensor is subjected to air cladding; thus, there is no need for oxide deposition and a further lithography step for sensing-area patterning. The sensor is well suited for low-cost fabrication and large-scale production. Finally, the same LT-MZI device with strip and slot arms but with oxide cladding was fabricated and characterized. The measurements were in good agreement with the electromagnetic (EM) simulation results, ensuring the reliability of our proposed design.

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