High-sensitivity optical sensor based on cascaded a FP Etalon and a ring resonator

2017 ◽  
Author(s):  
Hui-Hui Zhu ◽  
Yong-Heng Yue ◽  
Ya-Jie Wang ◽  
Min Zhang ◽  
Jian-Jun He ◽  
...  
Keyword(s):  
Optical Sensor ◽  
Ring Resonator ◽  
High Sensitivity

scholarly journals Vertical silicon nanowire-based racetrack resonator optical sensor

2019 ◽  
Vol 125 (11) ◽  
Author(s):  
S. M. Sherif ◽  
M. Y. Elsayed ◽  
L. A. Shahada ◽  
M. A. Swillam
Keyword(s):  
Insertion Loss ◽  
Silicon Nanowires ◽  
Optical Sensor ◽  
Ring Resonator ◽  
Silicon Nanowire ◽  
High Sensitivity ◽  
Highly Sensitive ◽  
Small Footprint ◽  
Racetrack Resonator

Abstract We propose a highly sensitive optical sensor which is built from silicon nanowires. The silicon nanowires are arranged to form a ring resonator. The silicon nanowires cladding and voids are filled with the analyte. The sensor has a small footprint of 16 μm × 16.5 μm. The insertion loss of the sensor is only 0.4 dB, while it is characterized by its high sensitivity of 430 nm/RIU. As a biosensor, our device showed a 100 nm/RIU sensitivity when a thin biolayer of 10 nm thickness is attached to the silicon nanowire structures.

scholarly journals Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3385
Author(s):  
Jialu Ma ◽  
Jingchao Tang ◽  
Kaicheng Wang ◽  
Lianghao Guo ◽  
Yubin Gong ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Complex Permittivity ◽  
Ring Resonator ◽  
High Sensitivity ◽  
Split Ring Resonator ◽  
Debye Model ◽  
Split Ring ◽  
Liquid Samples ◽  
Microwave Sensor

A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz. The liquid samples in capillary are placed in the resonant zone of the fabricated senor for high sensitivity measurement. The frequency shift of 58.7 MHz is achieved when the capillary is filled with ethanol, corresponding a sensitivity of 97.46 MHz/μL. The complex permittivity of methanol, ethanol, isopropanol (IPA) and deionized water at the resonant frequency are measured and calibrated by the first order Debye model. Then, the complex permittivity of different concentrations of aqueous solutions of these materials are measured by using the calibrated sensor system. The results show that the proposed sensor has high sensitivity and accuracy in measuring the complex permittivity of liquid samples with volumes as small as 0.13 μL. It provides a useful reference for the complex permittivity characterization of small amount of liquid chemical samples. In addition, the characterization of an important biological sample (inositol) is carried out by using the proposed sensor.

Multi-slot stack-type ring resonator for high sensitivity biosensor and low voltage optical modulator

2013 ◽  
Author(s):  
Yoshiteru Amemiya ◽  
Tomoya Taniguchi ◽  
Takeshi Ikeda ◽  
Masataka Fukuyama ◽  
Akio Kuroda ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Low Voltage ◽  
High Sensitivity ◽  
Optical Modulator

A Study of Micro-ring Resonator-Based Optical Sensor

2020 ◽  
pp. 59-65
Author(s):  
Papiya Debbarma ◽  
Srikanta Das ◽  
Bishanka Brata Bhowmik
Keyword(s):  
Optical Sensor ◽  
Ring Resonator

Design of a New-Type Electro-Optical Sensor Based on the Total-Internal Reflection Theory in Heterodyne Interferometry

2015 ◽  
Vol 1105 ◽  
pp. 136-140
Author(s):  
Shinn Fwu Wang ◽  
Fu Hsi Kao ◽  
An Li Liu
Keyword(s):  
Refractive Index ◽  
Optical Sensor ◽  
Incident Angle ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Measurement Range ◽  
Heterodyne Interferometry ◽  
Optical Source ◽  
Bk7 Glass ◽  
New Type

In this paper, a new-type electro-optical sensor based on the total-internal reflections theory in heterodyne interferometry is proposed. The sensor is designed as a semi-circle shape. It is made of BK7 glass with the refractive index of 1.51509. And the end surface of the sensor is designed as a micro-mirror. The phase difference between s-and p-polarizations at the output of the optical fiber sensor can be obtained when a heterodyne optical source is launched into the electro-optical sensor at a suitable incident angle. By numerical calculation, the resolution of the system by using the intensity method can reach refractive index unit (RIU) in the measurement range of. The electro-optical sensor could be valuable for chemical, biological and biochemical sensing. It is with some advantages, such as, high resolution and stability, high sensitivity and real-time measurement.

A high sensitivity humidity sensor based on micro-ring resonator with three coupling points

2014 ◽  
Author(s):  
Shi-liang Guo ◽  
Wen-juan Wang ◽  
Chun-hai Hu
Keyword(s):  
Humidity Sensor ◽  
Ring Resonator ◽  
High Sensitivity

scholarly journals Porous silicon ring resonator for compact, high sensitivity biosensing applications

2015 ◽  
Vol 23 (6) ◽  
pp. 7111 ◽  
Author(s):  
Gilberto A. Rodriguez ◽  
Shuren Hu ◽  
Sharon M. Weiss
Keyword(s):  
Porous Silicon ◽  
Ring Resonator ◽  
High Sensitivity
Sign in / Sign up

Export Citation Format

Share Document