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.

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.

2x2 Optical Switch Based on Silicon-on-Insulator Microring Resonator

2011 ◽  
Vol 378-379 ◽  
pp. 531-534
Author(s):  
B. Mardiana ◽  
Hanim Abdul Razak ◽  
H. Hazura ◽  
S. Shaari ◽  
P. Susthitha Menon ◽  
...  
Keyword(s):  
Optical Switch ◽  
Free Spectral Range ◽  
Fdtd Method ◽  
Single Mode ◽  
Microring Resonator ◽  
Silicon On Insulator ◽  
Electric Signal ◽  
Compact Size ◽  
Near Future ◽  
Difference Time

In near future, silicon-on-insulator (SOI) microring resonator are expected to be basic components for wavelength filtering and switching due to their compact size and wide free spectral range (FSR). In this paper, a 2X2 optical switch by using active microring resonator is proposed. The switch is consists of second order serially cascaded microring coupled to a pair of waveguide. The ON/OFF state of the design is control by electric signal which will vary the refractive index. The device is design to operate at 1.55µm wavelength. With a 500nm x 200nm rib dimensions, the design is proven to have single mode behaviour. Finite-Difference Time-Domain (FDTD) method simulation by RSOFT software is use to characterize the device performance. The results show that the 2X2 optical switch proposed can be an efficient device to be functioning in WDM application.

scholarly journals Fully three-dimensional analysis of a photonic crystal assisted silicon on insulator waveguide bend

2018 ◽  
Vol 32 (31) ◽  
pp. 1850344 ◽  
Author(s):  
N. Eti ◽  
Z. Çetin ◽  
H. S. Sözüer
Keyword(s):  
Photonic Crystal ◽  
Numerical Study ◽  
Fdtd Method ◽  
Three Dimensional ◽  
Silicon On Insulator ◽  
Geometrical Parameters ◽  
Low Loss ◽  
Bending Loss ◽  
Difference Time ◽  
Waveguide Bend

A detailed numerical study of low-loss silicon on insulator (SOI) waveguide bend is presented using the fully three-dimensional (3D) finite-difference time-domain (FDTD) method. The geometrical parameters are optimized to minimize the bending loss over a range of frequencies. Transmission results for the conventional single bend and photonic crystal assisted SOI waveguide bend are compared. Calculations are performed for the transmission values of TE-like modes where the electric field is strongly transverse to the direction of propagation. The best obtained transmission is over 95% for TE-like modes.

DESIGN AND CHARACTERIZATION OF MULTIPLE COUPLED MICRORING BASED WAVELENGTH DEMULTIPLEXER IN SILICON–ON–INSULATOR (SOI)

2012 ◽  
Vol 21 (01) ◽  
pp. 1250004 ◽  
Author(s):  
HAZURA HAROON ◽  
SAHBUDIN SHAARI ◽  
P. S. MENON ◽  
B. MARDIANA ◽  
A. R. HANIM ◽  
...  
Keyword(s):  
Free Spectral Range ◽  
Single Mode ◽  
Silicon On Insulator ◽  
Optimized Design ◽  
Third Order ◽  
Wavelength Division ◽  
Wavelength Demultiplexer ◽  
Planar Lightwave ◽  
Difference Time

We report in this paper, an optimized design and characterization of SOI based single mode, four channels wavelength demultiplexer using microrings. The usage of silicon-on-insulator (SOI) allows a wide free spectral range (FSR) for the device that is crucial in developing ultra-compact integrations of planar lightwave circuits (PLCs). The characterizations are done using Finite-Difference Time-Domain (FDTD) mode simulations from RSOFT. Serially cascaded microring arrays up to the third order are presented to study the design trade-off among the FSR, Q-factor and optical losses of the laterally coupled wavelength demultiplexer. The demultiplexer is expected to be working at C-band region of Wavelength Division Multilplexing (WDM) for a wavelength around 1550 nm. Our proposed demultiplexer has low insertion loss (< 0.5 dB) and a crosstalk around 12 ~ 19 dB.

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.

Investigation of Adhesion Materials for Gold Line-and-Space Surface Plasmon Antenna on SOI-MOS Photodiode

2011 ◽  
Vol 222 ◽  
pp. 201-204 ◽  
Author(s):  
Hiroaki Satoh ◽  
Yuki Matsuo ◽  
Hiroshi Inokawa ◽  
Atsushi Ono
Keyword(s):  
Finite Difference ◽  
Surface Plasmon ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Fdtd Method ◽  
Light Sensitivity ◽  
Silicon On Insulator ◽  
Electromagnetic Simulation ◽  
Metal Insulator ◽  
Difference Time

In order to improve the light sensitivity of silicon-on-insulator metal-insulator-semiconductor (SOI-MOS) photodiode, differences caused by the adhesion materials for gold (Au) line-and-space (L/S) surface plasmon (SP) antenna in MOS structure are evaluated based on the electromagnetic simulation using finite difference time domain (FDTD) method.

scholarly journals Vertical Injection and Wideband Grating Coupler Based on Asymmetric Grating Trenches

2021 ◽  
Author(s):  
Md Asaduzzaman ◽  
Robert J. Chapman ◽  
Brett C. Johnson ◽  
Alberto Peruzzo
Keyword(s):  
Fdtd Method ◽  
Coupling Efficiency ◽  
Silicon On Insulator ◽  
Subwavelength Structures ◽  
Grating Coupler ◽  
Subwavelength Gratings ◽  
Vertical Injection ◽  
Index Variation ◽  
2D Fdtd ◽  
Difference Time

Abstract A Silicon-on-insulator (SOI) perfectly vertical fibre-to-chip grating coupler is proposed and designed based on engineered subwavelength structures. The high directionality of the coupler is achieved by implementing step gratings to realize asymmetric diffraction and by applying effective index variation with auxiliary ultra-subwavelength gratings. The proposed structure is numerically analysed by using two-dimensional Finite Difference Time Domain (2D FDTD) method and achieves 76% (-1.19 dB) coupling efficiency and 39 nm 1-dB bandwidth.

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

Performance of Optical Wavelength Demultiplexer Based on Silicon-on-Insulator (SOI) Microring Resonators (MRRs)

2011 ◽  
Vol 378-379 ◽  
pp. 549-552
Author(s):  
H. Hazura ◽  
A.R. Hanim ◽  
B. Mardiana ◽  
S. Shaari ◽  
B.Y. Majlis ◽  
...  
Keyword(s):  
Time Domain ◽  
Finite Difference Time Domain ◽  
Free Spectral Range ◽  
Silicon On Insulator ◽  
Microring Resonators ◽  
Third Order ◽  
Optical Wavelength ◽  
Wavelength Demultiplexer ◽  
The Third ◽  
Difference Time

In this paper, we presented the performance analysis of Silicon- on- Insulator (SOI) based, four channels optical wavelength demultiplexer using microrings. The characterizations are done employing Finite- Difference Time- Domain (FDTD) mode simulations from RSOFT. Serially cascaded microring arrays up to the third order are demonstrated to discuss the design issues of the laterally coupled wavelength demultiplexer. Characteristics like the Free Spectral Range (FSR), crosstalk and insertion loss losses are studied.

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