Performance evaluation of GaAs photonic crystal based directional coupler all optical switch

2018 ◽  
Vol 7 (3.29) ◽  
pp. 220
Author(s):  
Sivasindhu M ◽  
P Samundiswary
Keyword(s):  
Performance Evaluation ◽  
Photonic Crystal ◽  
Integrated Circuits ◽  
High Speed ◽  
Directional Coupler ◽  
Optical Switch ◽  
Optical Filters ◽  
Optical Signals ◽  
All Optical ◽  
All Optical Switch

In future, the telecommunication systems will be totally based upon the photonic integrated circuits and components for the transmission of optical signals. Since optical signals offer high speed, less delay and higher efficiency. This introduces a new research area for photonic crystal based optical components like optical switch, multiplexer, optical filters etc. Among these devices, the optical switch draws more attention due to its primary switching operation. Hence, this paper deals with the modified design structure of GaAs photonic crystal based directional coupler all optical switch which operates at the wavelength of 1300nm. Further the switching performance evaluation of this device is made for both electro optic effect and non-linear optical effect. The design and simulation of the optical switch is done through Comsol Multiphysics software.   

Compact and efficient PC-based directional coupler all-optical switch

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sivasindhu Masilamani ◽  
Punniakodi Samundiswary
Keyword(s):  
Photonic Crystal ◽  
Response Time ◽  
Insertion Loss ◽  
Directional Coupler ◽  
Performance Metrics ◽  
Optical Switch ◽  
Extinction Ratio ◽  
Fast Response ◽  
All Optical ◽  
All Optical Switch

AbstractRecently, the photonic crystal–based optical components and devices have attracted many researchers’ attention because of its nanoscale size which makes it suitable for the photonic integrated applications. Hence, the design of all-optical switch based on photonic crystal structure have been investigated in the past few decades to meet the requirement of ultracompact size with optimized performances such as fast response time, high extinction ratio with low insertion loss. Here, the design of directional coupler–based all-optical switch operating at the wavelength of 1550 nm is proposed with new design values. The resonant operating wavelength of the switch is identified with the help of finite element method. Then, the cross-state switching operation is analysed with the help of finite-difference time-domain method by applying a nonlinear optical Kerr effect switching mechanism. The important performance metrics of the proposed design such as insertion loss, extinction ratio, directivity and the response time are obtained as −0.008 , 26.98, 20.44 dB and 0.13ps, respectively. The total footprint of the proposed optical switch is approximately 128 µm2.

scholarly journals Ultralow-energy and high-contrast all-optical switch involving Fano resonance based on coupled photonic crystal nanocavities

2013 ◽  
Vol 21 (10) ◽  
pp. 11877 ◽  
Author(s):  
Kengo Nozaki ◽  
Akihiko Shinya ◽  
Shinji Matsuo ◽  
Tomonari Sato ◽  
Eiichi Kuramochi ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Fano Resonance ◽  
Optical Switch ◽  
High Contrast ◽  
Ultralow Energy ◽  
All Optical ◽  
All Optical Switch
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