Application of Photonic Crystal Ring Resonators for Realizing All Optical Demultiplexers

Frequenz ◽  
2018 ◽  
Vol 72 (9-10) ◽  
pp. 465-470 ◽  
Author(s):  
Somaye Serajmohammadi ◽  
Hamed Alipour-Banaei ◽  
Farhad Mehdizadeh
Keyword(s):  
Photonic Crystal ◽  
Wavelength Division Multiplexing ◽  
Resonance Wavelength ◽  
Transmission Efficiency ◽  
Ring Resonators ◽  
Channel Spacing ◽  
Wavelength Division ◽  
All Optical ◽  
Core Section ◽  
Ring Core

Abstract Transmission efficiency, quality factor, crosstalk levels and number of output channels are the most crucial parameters in designing optical demultiplexers, suitable for wavelength division multiplexing applications. In this paper we proposed an 8-channel optical demultiplexer based on photonic crystal ring resonator. For performing wavelength selection task we used eight ring resonators. The resonance wavelength of the ring resonators depends on the dimensions of the ring core, therefore we choose eight different values for the lattice constant of the ring resonators core section. The average channel spacing of the structure is about 3 nm the transmission efficiency in most of the channels is equal or more than 99 % except in one channels whose transmission efficiency is 85 %.

Loss-Less Elliptical Channel Drop Filter for WDM Applications

2019 ◽  
Vol 40 (4) ◽  
pp. 379-384 ◽  
Author(s):  
S. Naghizade ◽  
S. M. Sattari-Esfahlan
Keyword(s):  
Integrated Circuits ◽  
Wavelength Division Multiplexing ◽  
Optical Filter ◽  
Resonance Wavelength ◽  
Transmission Efficiency ◽  
Ring Resonators ◽  
Physical Parameters ◽  
Wavelength Division ◽  
Filter Performance ◽  
Two Parameters

Abstract In this paper, we proposed optical filter based on two-dimensional photonic crystal elliptical channel for wavelength division multiplexing. We employed ring resonator with ellipse shaped core in proposed structure. The resonance wavelength of the ring resonators depends on two parameters: refractive index and radius of dielectric rods. We investigate the physical parameters governing the filter performance. Our results show that the transmission efficiency is 100 % due to nearly zero reflection and loss in channel. Band width of 4 nm and quality factor of 389 is obtained for filter. Also, the total footprint of proposed structure is 230.4 µm2 which makes it suitable for all optical integrated circuits.

Investigation on Ultra-compact 2DPC Coarse Wavelength Division Demultiplexer

2021 ◽  
Author(s):  
Venkatachalam Kannaiyan ◽  
Sriram Kumar D ◽  
Robinson S
Keyword(s):  
Integrated Circuits ◽  
Wavelength Division Multiplexing ◽  
Photonic Band Gap ◽  
Fdtd Method ◽  
Spectral Width ◽  
Transmission Efficiency ◽  
Circular Ring ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Functional Parameters

Abstract A two dimensional Photonic Crystal (2DPC) based eight channel wavelength division demultiplexer is proposed and designed for Coarse Wavelength Division Multiplexing (CWDM) applications. The circular ring resonator, channel selector, circulator rod, L bend waveguide and linear bus waveguide are essential parts of the proposed system. The system’s functional parameters such as Transmission efficiency, resonant wavelength, spectral width, channel spacing, Quality factor and crosstalk are investigated in this paper. The eight different wavelengths of channels are filtered out by altering the size of channel selector rod, setting the radius of the circle shaped cavity and relative refractive index of circulator rod. Initially the Photonic Band gap (PBG) is manipulated by applying Plane Wave Expansion (PWE) method of the 2DPC structure. The functional parameters are analysed by Finite Difference Time Domain (FDTD) method in periodic and non-periodic structure of the proposed system to arrive normalized transmission spectrum. The resonant wavelengths of designed eight paths of the device are varying from 1420nm to 1460nm with average spectral width and channel spacing are 5.8nm, 5.6nm respectively. The footprint of the device is 286.84µm2. Hence this small device can be implemented for CWDM systems in Photonic Integrated Circuits (PIC).

Investigation of 2D-PC Ring Resonator-Based Demultiplexer for ITU-T G.694.1 WDM Systems

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Venkatachalam Kannaiyan ◽  
Sriram Kumar Dhamodharan ◽  
Robinson Savarimuthu
Keyword(s):  
Wavelength Division Multiplexing ◽  
Ring Resonator ◽  
Photonic Band Gap ◽  
Expansion Method ◽  
Spectral Width ◽  
Active Role ◽  
Transmission Efficiency ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Two Dimensional Photonic Crystal

AbstractIn this proposed work, we have designed two-dimensional photonic crystal ring resonator (2DPC-RR)-based eight-channel demultiplexer for dense wavelength division multiplexing (DWDM) systems. The performance parameters of the proposed demultiplexer such as resonant wavelength, spectral width, quality factor, channel spacing and crosstalk are investigated. The demultiplexer consists of bus waveguide, quasi-square RR and L bend waveguides. Each quasi-square RR has eight-shaped microcavity with different refractive index, which plays an active role for channel selection. The plane wave expansion method is used to generate the modes and photonic band gap of the demultiplexer. The finite difference time domain method is employed to analysis the field distribution and normalized transmission of the proposed demultiplexer. The transmission efficiency, Q factor, spectral width and channel spacing of the demultiplexer are about 98 %, 2,022, 0.8 nm and 1.1 nm, respectively. The aforementioned results are meeting the requirements of the ITU-T G. 694.1 DWDM systems.

scholarly journals Optimization of DWDM Demultiplexer Using Regression Analysis

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Venkatachalam Rajarajan Balaji ◽  
Mahalingam Murugan ◽  
Savarimuthu Robinson
Keyword(s):  
Refractive Index ◽  
Regression Analysis ◽  
Wavelength Division Multiplexing ◽  
Linear Regression Analysis ◽  
Resonant Cavity ◽  
Transmission Efficiency ◽  
Output Waveguide ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Two Dimensional Photonic Crystal

We propose a novel twelve-channel Dense Wavelength Division Multiplexing (DWDM) demultiplexer, using the two-dimensional photonic crystal (2D PC) with square resonant cavity (SRC) of ITU-T G.694.1 standard. The DWDM demultiplexer consists of an input waveguide, SRC, and output waveguide. The SRC in the proposed demultiplexer consists of square resonator and microcavity. The microcavity center rod radius (Rm) is proportional to refractive index. The refractive index property of the rods filters the wavelengths of odd and even channels. The proposed microcavity can filter twelve ITU-T G.694.1 standard wavelengths with 0.2 nm/25 GHz channel spacing between the wavelengths. From the simulation, we optimize the rod radius and wavelength with linear regression analysis. From the regression analysis, we can achieve 95% of accuracy with an average quality factor of 7890, the uniform spectral line-width of 0.2 nm, the transmission efficiency of 90%, crosstalk of −42 dB, and footprint of about 784 μm2.

Wavelength Division Multiplexing and Demultiplexing using Photonic Crystal Multi Channel Add Drop Filter: A Review

2016 ◽  
Vol 5 (4) ◽  
pp. 29
Author(s):  
BHADRA ANAMIKA ◽  
SAHU VIKAS ◽  
SHRIVASTAVA SHARAD MOHAN ◽  
ANSHU ◽  
SANGHVI ANJALI S. ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Wavelength Division Multiplexing ◽  
Wavelength Division

An all optical photonic crystal half adder suitable for optical processing applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Azhdari ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
High Speed ◽  
Building Blocks ◽  
Optical Signal ◽  
Ring Resonators ◽  
Optical Processing ◽  
Nonlinear Photonic Crystal ◽  
Half Adder ◽  
All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

Design and Simulation of a Fast All-Optical Modulator Based on Photonic Crystal Using Ring Resonators

Silicon ◽  
2021 ◽  
Author(s):  
Mohammad Moradi ◽  
Masoud Mohammadi ◽  
Saeed Olyaee ◽  
Mahmood Seifouri
Keyword(s):  
Photonic Crystal ◽  
Ring Resonators ◽  
Optical Modulator ◽  
All Optical

Performance enhancement of Raman + EYDFA HOA for UD-WDM system applications

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Anurupa Lubana ◽  
Sanmukh Kaur ◽  
Yugnanda Malhotra
Keyword(s):  
Wavelength Division Multiplexing ◽  
Performance Enhancement ◽  
Optical Amplifier ◽  
Q Factor ◽  
Channel Spacing ◽  
Average Gain ◽  
Wavelength Division ◽  
System Parameters ◽  
Gain Variation ◽  
Hybrid Optical Amplifier

AbstractIn this work, we study and analyze the performance of Raman + Erbium-Ytterbium codoped fiber hybrid optical amplifier (HOA) for an ultradense wavelength division multiplexing (UD-WDM) system having 100 channels. The system has been investigated considering initial values of channel spacing and data rate of 0.1 nm (12.5 GHz) and 100 GB/s, respectively. Initially, the two important WDM system parameters—wavelength and channel spacing—have been selected and then optimization of the proposed HOA has been performed in terms of EYDFA length, pump power and Er+ concentration to achieve higher values of average gain, Q-factor and lower gain variation ratio. The optimized configuration of the HOA results in the achievement of higher value of average gain, Q-factor and gain variation ratio of 47 dB, 14 and 0.14, respectively, which confirms its viability for UD-WDM system applications.

Designing a photonic crystal fiber for an ultra-broadband parametric amplification in telecommunication region

2016 ◽  
Vol 25 (02) ◽  
pp. 1650023 ◽  
Author(s):  
Hassan Pakarzadeh ◽  
Mostafa Taghizadeh ◽  
Mohsen Hatami
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Wavelength Division Multiplexing ◽  
Wavelength Division ◽  
Crystal Fiber ◽  
Dispersion Wavelength ◽  
Zero Dispersion Wavelength ◽  
Highly Nonlinear ◽  
Fiber Optical ◽  
Fiber Optical Parametric Amplifier

A photonic crystal fiber (PCF) with a zero-dispersion wavelength (ZDW) in the telecommunication region is designed and an ultra-broadband fiber optical parametric amplifier (FOPA) based on such PCF is simulated. Results show that the PCF-based FOPA exhibits much higher gain with a very broad bandwidth (covering O- to U-band) in comparison with the highly nonlinear fiber (HNLF)-based FOPA. Also, the required fiber length and the input pump power are reduced for the PCF-based FOPA. The obtained results show the great potential of the PCF-based OPA for the telecommunication applications, e.g. amplification of wavelength-division multiplexing (WDM) signals.

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