Optical Sensing Properties Optimization of a Slot-Waveguide-Based Silicon Ring Resonator Biosensor

2013 ◽  
Vol 710 ◽  
pp. 395-399
Author(s):  
Liang Gao ◽  
Guo Hui Yuan ◽  
Jun Wang ◽  
Yu Ren Chen
Keyword(s):  
Ring Resonator ◽  
Free Spectral Range ◽  
Optical Biosensor ◽  
Silicon On Insulator ◽  
Slot Waveguide ◽  
Q Factor ◽  
Nacl Solution ◽  
Organic Solutions ◽  
Quality Factor Q ◽  
Sensing Characteristics

An optical biosensor with a slot-waveguide-based micro-ring resonator on silicon-on-insulator (SOI) is reported. By numerical analyzing, a small-sized sensor of 25×15μm2 with a sensitivity of 594nm/RIU can be achieved for NaCl solution, which is about eight times of that of the conventional micro-ring sensor. The free spectral range of 25.6nm and a quality factor Q of 430 are also observed. If SNR is more important, an asymmetric coefficient of 0.7 can be introduced to enhance Q factor. Our analysis also shows that the sensor has good sensing characteristics to other organic solutions.

A Multi-Slot-Waveguide-Based Ring Resonator Sensor on Silicon-on-Insulator Platform: Design and Simulation

2013 ◽  
Vol 710 ◽  
pp. 404-407
Author(s):  
Liang Gao ◽  
Guo Hui Yuan ◽  
Xing Li Liu ◽  
Yu Ren Chen
Keyword(s):  
Ring Resonator ◽  
Free Spectral Range ◽  
Fdtd Method ◽  
Silicon On Insulator ◽  
Asymmetric Structure ◽  
Slot Waveguide ◽  
A Value ◽  
Organic Solutions ◽  
Difference Time ◽  
Sensing Characteristics

We design a double slots based on micro-ring resonator on silicon-on-insulator (SOI). An asymmetric structure is considered for the ring waveguide in order to improve the sensor's bending efficiency. Finite-difference time-domain (FDTD) method is used to analyze and optimize this sensor. The optimized size of the sensor is below 25×15μm2. Numerical analysis shows that when the radius of the micro-ring is about 5μm, the sensitivity reaches a value of 708nm/RIU, which is ten times of that of the conventional micro-ring sensor. Quality factor (Qfactor) of 580 and free spectral range (FSR) of 33nm are also obtained. Our analysis also shows that the sensor has good sensing characteristics to different organic solutions.

High-Q Silicon-on-Insulator Micro-Ring Resonator with Silica Covering

2013 ◽  
Vol 684 ◽  
pp. 443-446
Author(s):  
Chao Liu ◽  
Chen Yang Xue ◽  
Dan Feng Cui ◽  
Jun Bin Zang ◽  
Yong Hua Wang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Transmission Spectrum ◽  
Electron Beam Lithography ◽  
Ring Resonator ◽  
Sio2 Layer ◽  
Silicon On Insulator ◽  
New Method ◽  
Ring Resonators ◽  
Q Factor ◽  
High Q

We designed High-Q micro-ring resonators based on SOI material. A new method of using a top SiO2 layer to cover the waveguide is applied and the tested Q factor is as high as 1.0135×104. Micro-ring resonator has been fabricated using Electron-Beam Lithography and Inductive Coupled Plasma. OptiFDTD was used to simulate the micro-ring resonator and we compared the transmission spectrum of this resonator with the resonator without SiO2 covering.

scholarly journals Modelling and simulation of a thermally induced optical transparency in a dual micro-ring resonator

2017 ◽  
Vol 4 (7) ◽  
pp. 170381 ◽  
Author(s):  
Joseph Lydiate
Keyword(s):  
Ring Resonator ◽  
Free Spectral Range ◽  
Red Shift ◽  
Resonant Wavelength ◽  
Silicon On Insulator ◽  
Optical Transparency ◽  
Spectral Position ◽  
Thermally Induced ◽  
Ring Configuration ◽  
Potential Applications

This paper introduces the simulation and modelling of a novel dual micro-ring resonator. The geometric configuration of the resonators, and the implementation of a simulated broadband excitation source, results in the realization of optical transparencies in the combined through port output spectrum. The 130 nm silicon on insulator rib fabrication process is adopted for the simulation of the dual-ring configuration. Two titanium nitride heaters are positioned over the coupling regions of the resonators, which can be operated independently, to control the spectral position of the optical transparency. A third heater, centrally located above the dual resonator rings, can be used to red shift the entire spectrum to a required reference resonant wavelength. The free spectral range with no heater currents applied is 4.29 nm. For a simulated heater current of 7 mA (55.7 mW heater power) applied to one of the through coupling heaters, the optical transparency exhibits a red shift of 1.79 nm from the reference resonant wavelength. The ring-to-ring separation of approximately 900 nm means that it can be assumed that there is a zero ring-to-ring coupling field in this model. This novel arrangement has potential applications as a gas mass airflow sensor or a gas species identification sensor.

Improvement of optical sensing performances of a double-slot-waveguide-based ring resonator sensor on silicon-on-insulator platform

Optik ◽  
2014 ◽  
Vol 125 (2) ◽  
pp. 850-854 ◽  
Author(s):  
Guohui Yuan ◽  
Liang Gao ◽  
Yuren Chen ◽  
Xinli Liu ◽  
Jun Wang ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Optical Sensing ◽  
Silicon On Insulator ◽  
Slot Waveguide

High Quality Factor using Nested Complementary Split Ring Resonator for Dielectric Properties of Solids Sample

2020 ◽  
Vol 35 (10) ◽  
pp. 1222-1227
Author(s):  
Norhanani Rahman ◽  
Zahriladha Zakaria ◽  
Rosemizi Rahim ◽  
Maizatul Said ◽  
Amyrul Bahar ◽  
...  
Keyword(s):  
Quality Factor ◽  
Error Detection ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Q Factor ◽  
Split Ring ◽  
Theoretical Simulation ◽  
Complementary Split Ring Resonator ◽  
Industry Applications ◽  
Quality Factor Q

A Nested complementary split ring resonator (CSRR) was proposed based on planar structure. The main objective of this work is to get a higher quality factor (Q-factor) with minimal error detection of complex permittivity. The sensor operated at the 3.37GHz resonant frequency and simulated by ANSYS HFSS software. Subsequently, the designed sensor has been fabricated and tested with the presence of several material under test (MUTs) placed over the sensor. The result achieved high unloaded Q-factor, 464. There has been proof of good agreement concerning the results between theoretical, simulation, and measured parameters of error detection, which is below 13.2% real part permittivity and 2.3% the loss tangent. The proposed sensor is practically useful for the food industry, bio-sensing, and pharmacy industry applications.

scholarly journals Enhancement of microwave ring resonator based on poly-lactic acid thermoplastic substrate

2020 ◽  
Vol 9 (6) ◽  
pp. 2419-2426
Author(s):  
Nurul Hanani Manab ◽  
Elfarizanis Baharudin ◽  
Fauziahanim Che Seman ◽  
Rosnah Mohd. Zin
Keyword(s):  
Lactic Acid ◽  
Return Loss ◽  
Ring Resonator ◽  
Substrate Material ◽  
Poly Lactic Acid ◽  
Q Factor ◽  
Hot Press ◽  
Thermoplastic Material ◽  
Quality Factor Q ◽  
Microwave Substrate

In this paper, the development of a single-port microwave ring resonator (MRR) sensor based on a thermoplastic material, which is poly-lactic acid (PLA), is presented. The open-ended coaxial probe method was applied to identify the dielectric properties of PLA in terms of dielectric constant (2.25) and loss tangent (0.0001). The PLA substrate was fabricated using a hot press machine and with the same thickness (1.6 mm) as FR4. Hence, to consider the PLA as microwave substrate, microwave ring resonator (MRR) operating at 1.1 GHz resonance frequency was designed, simulated, and measured. Based on the observation, the return loss of MRR for the simulation and the measurement of the conventional design are -5.37 dB and -5.02 dB, respectively. The quality factor (Q-factor) for both are 122.22 and 183.33, respectively. Then, the enhanced coupling gap method was applied to improve the performance of MRR sensitivity in terms of return loss and Q-factor. It is observed that the return loss of the enhanced design for the simulation and the measurement are -26.67 dB and -20.23 dB, respectively, and the Q-factor are 122.22 and 200, respectively. Thus, the performance of the MRR based on different designs were compared in order to validate the sensor’s sensitivity and PLA can be recognized as a substrate material for RF and microwave applications. 

scholarly journals Photonics Rib Waveguide Dimension Dependent Charge Distribution and Loss Characterization

2021 ◽  
Vol 29 (2) ◽  
Author(s):  
Angie Teo Chen Chen ◽  
Mohammad Rakib Uddin ◽  
Foo Kui Law
Keyword(s):  
Charge Distribution ◽  
Free Spectral Range ◽  
Silicon On Insulator ◽  
Design Parameters ◽  
Q Factor ◽  
Active Device ◽  
Rib Waveguide ◽  
Buried Oxide ◽  
Core Width ◽  
Physical Dimensions

The simulation of behaviour of the charge distribution and the loss characteristic for rib-waveguide is demonstrated by using silicon-on-insulator (SOI). In this simulation, the rib waveguide is designed at a core width of 450nm, core height of 250nm, rib height of 50nm and buried oxide height of 100nm. These dimensions are set as reference. The aspiration of designing rib waveguide instead of other type of waveguide such as ridge waveguide is from the higher light confinement that can be accomplished by rib waveguide as the refractive index difference is huge and the designing of an active device can be realized. In this analysis, free carrier-injection effect was implemented in the first part of the simulation to study the distribution charges of rib-based waveguide structure based on basic dimensions. In this analysis, electrical voltage was varied from 0V to 1.2V in steps of 0.2V for the analysis of distribution of electron. In the second part of the simulation, four design parameters had been amended which included the core width and height, rib height and buried oxide height. Physical dimensions of the waveguide were altered to achieve smaller device footprint with optimized performance affecting large Free Spectral Range (FSR) and high Q-factor. With proper waveguide physical dimensions design, a good performance Micro-Ring Resonator (MRR) exhibits the principles of wide FSR and Q-factor can be achieved.

scholarly journals Label-Free Biosensing With a Slot-Waveguide-Based Ring Resonator in Silicon on Insulator

2009 ◽  
Vol 1 (3) ◽  
pp. 197-204 ◽  
Author(s):  
T. Claes ◽  
J.G. Molera ◽  
K. De Vos ◽  
E. Schacht ◽  
R. Baets ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Silicon On Insulator ◽  
Slot Waveguide ◽  
Label Free
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