An Optical Five Channel Demultiplexer-Based Simple Photonic Crystal Ring Resonator for WDM Applications

2019 ◽  
Vol 41 (1) ◽  
pp. 37-43 ◽  
Author(s):  
S. Naghizade ◽  
S. M. Sattari-Esfahlan
Keyword(s):  
Refractive Index ◽  
Integrated Circuit ◽  
Ring Resonator ◽  
Fdtd Method ◽  
Transmission Efficiency ◽  
Optical Channel ◽  
Photonic Integrated Circuit ◽  
Simple Ring ◽  
Quality Factor Q ◽  
Ring Core

Abstract We have proposed simple ring resonator 5-channel demultiplexer based on optical channel drop filter analysis that is applicable at third communication window (1550 nm) range. Our proposed base filter is the important part in designing the demultiplexer, inclusive one ring resonator contains one square dielectric rod at core. Demultiplexer structure introduced by arranging five filter with different ring core refractive index. Insomuch every ring core have individual refractive index, thus each ring have diverse resonant wavelength. Numerical results by the finite difference time domain (FDTD) method show quality factor (Q) and transmission efficiency of fundamental channel drop filter are 1038 and 93 %, respectively. It is found that transmission efficiency in designed demultiplexer is more than 90 % for each channel; channel spacing is less than 4.2 nm. The average crosstalk value, total footprint of demutiplexer is −17.85 dB, 689.61 μm2, respectively. Small size with a very simple ring design can be benefit in photonic integrated circuit.

Concurrent Dual and Triple Band Square Ring Resonator Base-Band Filter using Metal-Insulator-Metal for Plasmonic Applications

2020 ◽  
Vol 35 (10) ◽  
pp. 1176-1182
Author(s):  
Surendra Bitra ◽  
Sridhar Miriyala
Keyword(s):  
Integrated Circuit ◽  
Ring Resonator ◽  
Ring Resonators ◽  
Band Pass Filter ◽  
Quality Factors ◽  
Pass Filter ◽  
Photonic Integrated Circuit ◽  
Transmission Coefficients ◽  
Metal Insulator Metal ◽  
Multiple Band

Ring resonators are capable of providing high-quality factors with low insertion loss, which are the factors for considering it as a potential technique of guiding signal in the nanometer wavelengths. In this paper, a Nanoplasmonic configuration of a resonator comprising of the square ring known as Square Ring Resonator (SRR) is designed and analyzed for multiple band characteristics. The performance analysis of two different structures of the square ring resonators are presented in terms of the simulation reports like reflection and transmission coefficients, and field distribution plots. The designed Band Pass Filter (BPF) expressed excellent performance in the optical bands and hence are best suitable for Photonic Integrated Circuit (PIC) applications.

DESIGN OF HIGH EFFICIENCY AND LARGE SEPARATING ANGLE BEAM SPLITTER BASED ON PHOTONIC CRYSTAL CAVITY RESONATOR

2011 ◽  
Vol 25 (24) ◽  
pp. 1963-1969 ◽  
Author(s):  
HAO GUO ◽  
QINGHUA LIAO ◽  
TIANBAO YU ◽  
SHUWEN CHEN ◽  
YONGZHEN HUANG
Keyword(s):  
Integrated Circuit ◽  
Beam Splitter ◽  
High Efficiency ◽  
Fdtd Method ◽  
Cavity Resonator ◽  
Equal Distribution ◽  
Photonic Integrated Circuit ◽  
Light Waves ◽  
Distribution Of Power ◽  
Propagation Properties

We present the design and simulation of an ultracompact high efficiency beam splitter based on propagation properties of the light waves in waveguide and cavity resonator. The splitting properties of the beam splitter have been numerically simulated and analyzed using the plane wave expansion (PWE) method and finite difference time domain (FDTD) method. Then in order to minimize backward reflections and to obtain equal distribution of power, we placed a cavity resonator waveguides to optimize the devices. It is shown that a beam splitter with high efficiency and large separating angle for TM mode can be achieved. There is no doubt that these excellent features will provide the structure a promising applying prospect for photonic integrated circuit.

Programmable Integrated Photonics

2020 ◽  
Author(s):  
José Capmany ◽  
Daniel Pérez
Keyword(s):  
Integrated Circuit ◽  
Performance Monitoring ◽  
Low Cost ◽  
Limiting Factors ◽  
External Control ◽  
Integrated Photonics ◽  
New Paradigm ◽  
Photonic Integrated Circuit ◽  
And Performance ◽  
Application Fields

Programmable Integrated Photonics (PIP) is a new paradigm that aims at designing common integrated optical hardware configurations, which by suitable programming can implement a variety of functionalities that, in turn, can be exploited as basic operations in many application fields. Programmability enables by means of external control signals both chip reconfiguration for multifunction operation as well as chip stabilization against non-ideal operation due to fluctuations in environmental conditions and fabrication errors. Programming also allows activating parts of the chip, which are not essential for the implementation of a given functionality but can be of help in reducing noise levels through the diversion of undesired reflections. After some years where the Application Specific Photonic Integrated Circuit (ASPIC) paradigm has completely dominated the field of integrated optics, there is an increasing interest in PIP justified by the surge of a number of emerging applications that are and will be calling for true flexibility, reconfigurability as well as low-cost, compact and low-power consuming devices. This book aims to provide a comprehensive introduction to this emergent field covering aspects that range from the basic aspects of technologies and building photonic component blocks to the design alternatives and principles of complex programmable photonics circuits, their limiting factors, techniques for characterization and performance monitoring/control and their salient applications both in the classical as well as in the quantum information fields. The book concentrates and focuses mainly on the distinctive features of programmable photonics as compared to more traditional ASPIC approaches.

All-Silicon Photodetectors for Photonic Integrated Circuit Calibration

2021 ◽  
pp. 1-1
Author(s):  
Sarvagya Dwivedi ◽  
Jon Kjellman ◽  
Tangla David ◽  
Mathias Prost ◽  
Olga Syshchyk ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Photonic Integrated Circuit

scholarly journals A Review on Terahertz Technologies Accelerated by Silicon Photonics

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1646
Author(s):  
Jingya Xie ◽  
Wangcheng Ye ◽  
Linjie Zhou ◽  
Xuguang Guo ◽  
Xiaofei Zang ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Silicon Photonics ◽  
Large Scale ◽  
Cost Effective ◽  
Single Chip ◽  
Photonic Integrated Circuit ◽  
Hybrid Silicon ◽  
The Cost ◽  
Silicon Based ◽  
Thz Applications

In the last couple of decades, terahertz (THz) technologies, which lie in the frequency gap between the infrared and microwaves, have been greatly enhanced and investigated due to possible opportunities in a plethora of THz applications, such as imaging, security, and wireless communications. Photonics has led the way to the generation, modulation, and detection of THz waves such as the photomixing technique. In tandem with these investigations, researchers have been exploring ways to use silicon photonics technologies for THz applications to leverage the cost-effective large-scale fabrication and integration opportunities that it would enable. Although silicon photonics has enabled the implementation of a large number of optical components for practical use, for THz integrated systems, we still face several challenges associated with high-quality hybrid silicon lasers, conversion efficiency, device integration, and fabrication. This paper provides an overview of recent progress in THz technologies based on silicon photonics or hybrid silicon photonics, including THz generation, detection, phase modulation, intensity modulation, and passive components. As silicon-based electronic and photonic circuits are further approaching THz frequencies, one single chip with electronics, photonics, and THz functions seems inevitable, resulting in the ultimate dream of a THz electronic–photonic integrated circuit.

scholarly journals Optimising the Complex Refractive Index Model for Estimating the Permittivity of Heterogeneous Concrete Models

2021 ◽  
Vol 13 (4) ◽  
pp. 723
Author(s):  
Hossain Zadhoush ◽  
Antonios Giannopoulos ◽  
Iraklis Giannakis
Keyword(s):  
Refractive Index ◽  
Shape Factor ◽  
Complex Refractive Index ◽  
Fdtd Method ◽  
Air Voids ◽  
Water Fraction ◽  
Index Model ◽  
General Complex ◽  
Ground Penetrating ◽  
Fine Tune

Estimating the permittivity of heterogeneous mixtures based on the permittivity of their components is of high importance with many applications in ground penetrating radar (GPR) and in electrodynamics-based sensing in general. Complex Refractive Index Model (CRIM) is the most mainstream approach for estimating the bulk permittivity of heterogeneous materials and has been widely applied for GPR applications. The popularity of CRIM is primarily based on its simplicity while its accuracy has never been rigorously tested. In the current study, an optimised shape factor is derived that is fine-tuned for modelling the dielectric properties of concrete. The bulk permittivity of concrete is expressed with respect to its components i.e., aggregate particles, cement particles, air-voids and volumetric water fraction. Different combinations of the above materials are accurately modelled using the Finite-Difference Time-Domain (FDTD) method. The numerically estimated bulk permittivity is then used to fine-tune the shape factor of the CRIM model. Then, using laboratory measurements it is shown that the revised CRIM model over-performs the default shape factor and provides with more accurate estimations of the bulk permittivity of concrete.

Gallium Arsenide Photonic Integrated Circuit Platform for Tunable Laser Applications

2021 ◽  
pp. 1-1
Author(s):  
Paul Verrinder ◽  
Lei Wang ◽  
Joseph Fridlander ◽  
Fengqiao Sang ◽  
Victoria Rosborough ◽  
...  
Keyword(s):  
Gallium Arsenide ◽  
Integrated Circuit ◽  
Tunable Laser ◽  
Laser Applications ◽  
Photonic Integrated Circuit

scholarly journals Silicon integrated multi-mode ring resonator

Nanophotonics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 1265-1272
Author(s):  
Mengyuan Ye ◽  
Chunlei Sun ◽  
Yu Yu ◽  
Yunhong Ding ◽  
Xinliang Zhang
Keyword(s):  
Integrated Circuit ◽  
Ring Resonator ◽  
Rapid Development ◽  
Essential Element ◽  
Single Mode ◽  
Modal Dispersion ◽  
Waveguide Width ◽  
Mode Division Multiplexing ◽  
Evanescent Coupling ◽  
Multi Mode

Abstract Ring resonator is an essential element in silicon integrated circuit, it is widely used as filter, wavelength multiplexer and switch in single-mode operation regime. As the rapid development of mode division multiplexing (MDM) technique, ring resonator that can process multi-mode signals simultaneously and uniformly is highly desired. However, the severe modal dispersion makes identical transmission for different modes very hard. In this paper, by breaking through the limitation of conventional multi-mode manipulation design with evanescent coupling or mode interference, we propose and demonstrate a multi-mode ring resonator (MMRR) inspired by the free space geometric optics. Arbitrary number of supporting modes can be achieved by simply widening the waveguide width. For proof-of-concept demonstration, an MMRR supporting four modes is fabricated with uniform transmittance. Furthermore, architecture of cascaded four MMRRs are also demonstrated experimentally.

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