Modeling and analysis of all‐optical pressure sensor using photonic crystal based micro ring resonator

2021 ◽  
Author(s):  
Uttara Biswas ◽  
Jayanta Kumar Rakshit ◽  
Bhuvneshwer Suthar ◽  
Deepak Kumar ◽  
Chittaranjan Nayak
Keyword(s):  
Photonic Crystal ◽  
Pressure Sensor ◽  
Ring Resonator ◽  
Modeling And Analysis ◽  
All Optical ◽  
Optical Pressure

All optical NAND/NOR and majority gates using nonlinear photonic crystal ring resonator

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hassan Mamnoon-Sofiani ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Ring Resonator ◽  
Logic Gates ◽  
Building Blocks ◽  
Optical Data ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

Abstract All optical logic gates are building blocks for all optical data processors. One way of designing optical logic gates is using threshold switching which can be realized by combining an optical resonator with nonlinear Kerr effect. In this paper we showed that a novel structure consisting of nonlinear photonic crystal ring resonator which can be used for realizing optical NAND/NOR and majority gates. The delay time of the proposed NAND/NOR and majority gates are 2.5 ps and 1.5 ps respectively. Finite difference time domain and plane wave expansion methods were used for simulating the proposed optical logic gates. The total footprint of the proposed structure is about 988 μm2.

Concave Rectangle Photonic Crystal Ring Resonator for Ultra-Fast All-Optical Modulation

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Sana Rebhi ◽  
Radhouene Massoudi ◽  
Monia Najjar
Keyword(s):  
Photonic Crystal ◽  
Insertion Loss ◽  
Ring Resonator ◽  
Extinction Ratio ◽  
Input Power ◽  
Light Signal ◽  
Optical Modulator ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

AbstractIn this paper, an ultra-fast all-optical modulator, based on a new shape of nonlinear photonic crystal ring resonator, is designed and studied. Numerical methods such as plane wave expansion (PWE) and finite-difference time domain (FDTD) are used to perform simulations. The modulation technique consists of carrier light controlling by means of input light signal and Kerr effect. The investigation of extinction ratio and insertion loss within the carrier input power shows that the choice of 0.7 W is the optimal value of that power to ensure the tradeoff between both characteristics. The suggested modulator demonstrates an excellent extinction ratio about 20.8018, a very low insertion loss of −13.98 and a short switching time about 13.4 ps. According to the obtained results, the modulator can be considered as an ultra-fast and ultra-compact optical component.

scholarly journals All optical binary ASK demodulator using photonic crystal based nonlinear ring resonator

2020 ◽  
Vol 50 (1) ◽  
Author(s):  
Mahsa Narimanzadeh ◽  
Alireza Andalib
Keyword(s):  
Photonic Crystal ◽  
Ring Resonator ◽  
Optical Intensity ◽  
Plane Wave Expansion ◽  
Working Mechanism ◽  
All Optical ◽  
Shift Keying ◽  
Simulation Results ◽  
Optical Behavior ◽  
Difference Time

In this paper we will propose and design an all optical amplitude shift keying demodulator using a photonic crystal based nonlinear ring resonator. The proposed structure will be designed such that it can generate digital 0 and 1 based on the amplitude of the input signal. The working mechanism is based on controlling the optical behavior of the resonant ring using optical intensity. The proposed structure was simulated using plane wave expansion and finite difference time domain methods. The simulation results show that the rise and fall times for the proposed structure are 0.5 and 0.1 ps, respectively.

A photonic crystal based de-multiplexer with uniform channel spacing

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahdi Hassangholizadeh-Kashtiban ◽  
Emamali Fathi ◽  
Asghar Hassanlou
Keyword(s):  
Photonic Crystal ◽  
Quality Factor ◽  
Communication Networks ◽  
Optical Communication ◽  
Ring Resonator ◽  
High Quality ◽  
Channel Spacing ◽  
All Optical ◽  
Uniform Channel ◽  
Adjacent Channels

Abstract Having uniform channel spacing is very important for all optical communication networks. In spite of its importance designing optical de-multiplexer with uniform channel spacing seems to be very complicated. In this paper we proposed an all optical de-multiplexer with uniform channels spacing. Four high quality factor ring resonator were used for designing the desired structure. In the proposed structure the output channels are at 1555.2, 1556.2, 1557.2 and 1558.2 nm. The channel spacing for all of the adjacent channels are 1 nm. Also for the final structure the quality factor values vary from 7758 to 15,582.

All optical half subtractor based on threshold switching and beams interference mechanisms

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Asghar Askarian
Keyword(s):  
Steady State ◽  
Photonic Crystal ◽  
Ring Resonator ◽  
Contrast Ratio ◽  
High Contrast ◽  
Threshold Switching ◽  
All Optical ◽  
Simulation Results ◽  
Maximum Rise

AbstractIn this paper, ultra-fast, compact and high contrast ratio all optical half subtractor based on photonic crystal designed and simulated. The proposed design will be constructed using both threshold switching and interference of beams mechanisms. The proposed structure is composed of six waveguides and a nonlinear ring resonator. The simulation results show that the contrast ratio for D and B ports were obtained about 18.80 and 15.05 dB, respectively. Also the maximum rise, fall and steady-state times and total footprint for suggested all optical half subtractor are 0.5, 0.25, 1.5 ps and 234 μm2, respectively.

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