scholarly journals Optofluidic refractometer using resonant optical tunneling effect

2010 ◽  
Vol 4 (4) ◽  
pp. 043008 ◽  
Author(s):  
A. Q. Jian ◽  
X. M. Zhang ◽  
W. M. Zhu ◽  
M. Yu
Keyword(s):  
Tunneling Effect ◽  
Optical Tunneling

scholarly journals Biosensing Near the Exceptional Point Based on Resonant Optical Tunneling Effect

Micromachines ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 426
Author(s):  
Yang Liu ◽  
Pengyun Yan ◽  
Feng Liu ◽  
Aoqun Jian ◽  
Shengbo Sang
Keyword(s):  
Exceptional Point ◽  
Tunneling Effect ◽  
Coupled Mode Theory ◽  
Environment Protection ◽  
Label Free ◽  
Liquid Sample ◽  
Water Safety ◽  
Coupled Mode ◽  
Drinking Water Safety ◽  
Optical Tunneling

Inspired by exceptional point (EP) sensing in non-Hermitian systems, in this work, a label-free biosensor for detecting low-concentration analytes is proposed, via a special multilayer structure: a resonant optical tunneling resonator. Due to the square root topology near the exceptional point, a recognized target analyte perturbs the system deviated from the exceptional point, leading to resolvable modes splitting in the transmission spectrum. The performance of the designed sensor is analyzed by the coupled-mode theory and transfer matrix method, separately. Here, the simulation results demonstrate that the obtained sensitivity is 17,120 nm/imaginary part unit of refractive index (IP) and the theoretical detection limit is 4.2 × 10−8 IP (regarding carcinoembryonic antigen (CEA), the minimum detection value is 1.78 ng). Instead of the typical diffusion manner, the liquid sample is loaded by convection, which can considerably improve the efficiency of sample capture and shorten the response time of the sensor. The sketched sensor may find potential application in the fields of biomedical detection, environment protection, and drinking water safety.

Performance test of an internally modulated He-Ne laser based on optical tunneling effect

2020 ◽  
Vol 127 ◽  
pp. 106154
Author(s):  
Zhongqi Tan ◽  
Xiaobao Zhang ◽  
Jianping Liu ◽  
Bin Zhang
Keyword(s):  
Performance Test ◽  
Tunneling Effect ◽  
Optical Tunneling
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