Photonic Crystal Waveguide and Cavities for all-Optical Logic Devices

Mahesh, V. V.; Gowre, Sanjay Kumar; Soma, Savita; Gogga, Sanjeev P.

doi:10.1109/icicct.2018.8473176

Cited by 5 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By creating photonic band gap (PBG) in a periodically modulated dielectric media we can con ne and control the propagation of light [12][13][14][15][16]. PhCs nanocavity is formed by creating line defect in the structure through which light is made to propagate [17][18][19][20][21]. Many optical devices can be realized by using photonic crystal nanocavity.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Soma

Gowre²,

Sonth³

et al. 2023

Opt Quant Electron

Self Cite

View full text Add to dashboard Cite

The proposed work presents a new structure that can be used as recon gurable optical logic gates. This structure is constructed in a two dimensional (2D) photonic crystals (PhCs). Logic gates like AND, NOT and NOR are realized by using the proposed structure. These optical logic gates are constructed in 6 µm * 6 µm in 2D PhCs square lattice with a lattice constant a=0.648 µm. All the gates are realized by creating structural disorders in the cross-waveguide geometries of 2D PhCs. The several performance parameters are examined using this structure and observed that proposed structure has reduced size, fast response time of 0.46ps, high bit rates of 2.14Tbits/sec and better contrast ratio of 8.6dB against the existing designs. The signal amplitude larger than 0.5 arbitrary units (a.u.) and less than 0.1 (a.u.) at output are considered as logic '1' and '0' respectively. The plane wave expansion (PWE) is utilised to get the band gap for this logic gate 2D PhC structure and the nite difference time domain (FDTD) technique is utilised to investigate their performance in terms of light travelling in the crystal lattice structure. The gates are implemented in third optical window at the wavelength of 1.55 µm and can be used in photonic integrated circuits for signal processing in optical communication.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Soma

Gowre²,

Sonth³

et al. 2023

Opt Quant Electron

Self Cite

View full text Add to dashboard Cite

show abstract

“…Four inputs and two outputs encoder is designed with one control input which helps to produce output corresponding to the input and prevents the outputs when it is OFF.The logic blocks designed in two dimensional (2D) photonic crystals (PhCs) can be modeled using nite difference time domain (FDTD) computational method. The investigation of light behavior in 2D PhCs for all optical devices such as adders [2] and add-drop lters using cavity based ring resonators [3] and waveguides [4] is the basic idea for the encoder design. The optical encoders designed by various authors have been studied for the design of our present work.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of 4x2 Optical Encoder using Waveguides and Defects Mechanism in Two Dimensional Photonic Crystals

Gogga¹,

Gowre²,

Sonth³

et al. 2022

Preprint

View full text Add to dashboard Cite

The proposed encoder in two dimensional photonic crystals is analyzed interms of flow of light inside waveguides. Waveguides have been created by removing silicon rods in the structure and defects with smaller radii have been created to achieve the proper couplers operations. The photonic band gap of the proposed encoder is determined and their performance is evaluated using finite difference time domain method. The proposed design has an optical output power threshold range between 76-94% for ON state and threshold level of OFF state is below 20%. The proposed encoder is operated in the wavelength of 1550 nm. Hence, it is applicable for high speed optical integrated circuit. The response time and contrast ratio calculated from the proposed encoder are 0.24 ps and 8.59 dB which are comparatively better than the literature reported with compare to footprint area of the proposed encoder.

show abstract

Study of light behaviour in waveguides and cavities of photonic crystal based optical devices

Sonth¹,

Sreekanth²,

Gowre³

et al. 2023

AIP Conference Proceedings

View full text Add to dashboard Cite

Photonic Crystal Waveguide and Cavities for all-Optical Logic Devices

Cited by 5 publications

References 12 publications

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Design and Analysis of 4x2 Optical Encoder using Waveguides and Defects Mechanism in Two Dimensional Photonic Crystals

Study of light behaviour in waveguides and cavities of photonic crystal based optical devices

Contact Info

Product

Resources

About