Design and Analysis of All-Optical Isolator Based on Linear Photonic Crystal

Goswami, Kamanashis; Mondal, Haraprasad; Sen, Mrinal K.; Sharma, Anup

doi:10.1007/s13538-022-01086-8

Cited by 12 publications

(2 citation statements)

References 55 publications

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“…In this method the optical device is constructed based on constructive and destructive interference phenomenon of optical beams. Many optical devices such as isolator, decoder, gates, adders, subtractors, comparators, convertors and multiplexer were made with this procedure [15][16][17][18][19][20][21][22][23][24][25]. The functional parameters of these optical devices including ON-OFF contrast ratio (CR), bit rate (BR), optical intensity (OI), fall, rise and delay times (T r , T f andT d ) and total footprint (TFP) were evaluated.…”

Section: Introductionmentioning

confidence: 99%

A novel proposal for all optical 1-bit comparator based on 2D linear photonic crystal

Askarian

Parandin

2022

J Comput Electron

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In this paper, we are going to employ seven optical waveguides (OWGs) based on two-dimensional (2D) linear photonic crystal (LPhC) for realizing an all optical comparator (AOCMP). The proposed 1-bit AOCMP has a very simple structure with a footprint of 351 μm 2 which is composed of 31 × 33 cubic lattice of silicon rods immersed in air. This LPhC comparator comprises two input ports and two output ports. The functionality of the proposed 1-bit AOCMP is based on constructive and destructive interference phenomenon of optical beams and phase shift keying technique. The nite difference time domain (FDTD) procedure based on Yee's Algorithm is used to compute the propagation of optical waves in this structure. The FDTD simulation results of suggested 1-bit AOCMP indicate that the minimum and maximum values of the normalized power (NP) at ON and OFF states for output ports are 73% and 15%, respectively. Also, the ON-OFF contrast ratio (CR), bit rate (BR), rise and fall times (T r and T f ) of the suggested design are about 6.87 dB, 2.22 Tb/S, 0.15ps and 0.05ps, respectively.

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Section: Introductionmentioning

confidence: 99%

A novel proposal for all optical 1-bit comparator based on 2D linear photonic crystal

Askarian

Parandin

2022

J Comput Electron

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“…Insect wings, such as butterflies and cicadas, are relatively common biological materials. It is well known that photonic crystals are artificial microstructures made of periodic arrangements of media with different refractive indices [23][24][25]. However, natural photonic crystal microstructures exist within the butterfly wing structure [26], which can yield unique optical phenomena, such as optical interference, diffraction and scattering effects [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Stability-Enhanced Emission Based on Biophotonic Crystals in Liquid Crystal Random Lasers

2022

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A new design of a bio-random laser based on a butterfly wing structure and ITO glass is proposed in this article. Firstly, the butterfly wing structure was integrated in a liquid crystal cell made of ITO glass. The integrated liquid crystal cell was injected with liquid crystal and dye to obtain a bio-random laser. A non-biological random laser was obtained with a capillary glass tube, liquid crystal and dye. The excitation spectra and thresholds were recorded to evaluate the performance of the biological and non-biological random lasers. The results show that the excitation performance stability of the bio-random laser is improved and the number of spikes in the spectra is reduced compared with the non-biological random laser. Finally, the equivalent cavity length of the biological and non-biological random lasers was compared and the optical field distribution inside the butterfly wing structure was analyzed. The data show that the improvement of the excitation performance stability of the bio-random laser is related to the localization of the optical field induced by the photonic crystal structure in the butterfly wing.

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