Design and optimization of photonic crystal based eight channel dense wavelength division multiplexing demultiplexer using conjugate radiant neural network

Balaji, V. R.; Murugan, M.; Robinson, S.; Nakkeeran, R.

doi:10.1007/s11082-017-1038-z

Cited by 24 publications

(11 citation statements)

References 23 publications

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“…The PC can allow light into PBG by introducing a defect in the crystal or breaking the periodicity. The propagation of light in PBG enables the design of various components like fibre optics [10], filters [11], lasers [12], multiplexers [13], demultiplexer [14], Routers [15], logic gates [16], power splitters [17], and optical sensors [18] Wavelength Division Multiplexing (WDM) is an essential technology in optical communication systems. The WDM allows the single mode fibre (SMF) to carry a number of wavelengths per fibre.WDM is divided into Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM).…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of eight channel demultiplexer using 2D photonic crystal with trapezium cavity

Kavitha¹,

V.R

Dhanabalan

et al. 2023

J. Opt.

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In this work, an eight-channel Dense Wavelength Division Multiplexing (DWDM) demultiplexer is designed with a 2D Photonic Crystal (PC) Triangular lattice. The proposed demultiplexer consists of a centre bus waveguide, an isosceles trapezium resonant cavity, and an eight circular ring cavity (CR1, CR2, CR3, CR4, CR5, CR6, CR7, and CR8). The point defect resonant cavity consists of seven rods to drop different wavelengths from eight cavities, each of eight drop waveguides. The design is very simple for realistic systems. The Finite Difference Time Domain (FDTD) and Plane Wave Expansion Method (PWE) methods are used to determine the proposed design's band structure and transmission spectrum. The resonant wavelengths are 1.5441μm, 1.5443μm 1.54449μm 1.5447μm 1.5449μm 1.5551μm 1.5553μm, and 1.5555μm respectively. The proposed device provides a high-quality factor, transmission efficiency, and low Crosstalk. The device's footprint is 451.2 μm2 easily incorporated into a Photonic Integrated Circuits (PIC).

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Section: Introductionmentioning

confidence: 99%

Design and performance analysis of eight channel demultiplexer using 2D photonic crystal with trapezium cavity

Kavitha¹,

V.R

Dhanabalan

et al. 2023

J. Opt.

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“…Two-dimensional PCs are of great interest in research as they possess ultra-high light confinement compared with 1D PCs and are easier to fabricate and have a simpler design than 3D PC structures. Two-dimensional PC-based optical devices, such as optical sensors [12][13][14], strain sensors [15], filters [16,17], switches [18,19], demultiplexers [20,21], power splitters [22] and optical directional couplers [23], have been reported previously.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a photonic crystal-based biosensor for the detection of chikungunya virus

Gowdhami¹,

Balaji²

2023

Laser Phys.

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A two-dimensional photonic crystal biosensor is theoretically demonstrated and investigated based on refractive index sensing. It detects the chikungunya virus (CHIKV) in the various blood components with high sensitivity of 421.5 nm/RIU. Simulation and various analyses are done with both normal and infected blood constituents (uric acid, platelets and plasma) to detect CHIKV. The sensor operates within the wavelength range of 1230–1560 nm. The important optical parameters such as sensitivity and quality factor are analyzed and numerical investigations are done with the finite difference time domain method. The sensor is built with a circular array of holes etched on a silicon slab in a hexagonal lattice pattern. A nanohole resonant sensing cavity is placed at the center of two waveguides, enhancing the light–matter interaction of the analyte and trapping the optical mode at the nanohole of the sensor. When the sensor is completely submerged in blood constituents infected with CHIKV (plasma, platelets and uric acid), the resonating modes undergo a shift as the refractive index of each analyte is unique. The sensor has a very high sensitivity of 421.5 nm RIU−1, and a good quality factor of 229.68 for the different blood constituents is obtained. A maximum transmission of 89.25% with a detection limit of 0.01 are obtained and reported in this work.

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“…[2]. Mainly the optical devices are designed by 2DPC, such as, Encoders, Decoders [3], Adders [4], Multiplexers and Demultiplexer [5], Isolators [6], Filters [7], Power splitter [8], Directional coupler, Circulator, logic gates [9,10], Sensors [11,12], Analog to digital converters [13], Comparator and so on.…”

Section: Introductionmentioning

confidence: 99%

Investigation on ultra-compact, high contrast ratio 2D-photonic crystal based all optical 4 × 2 encoder

Arunkumar¹,

Kavitha²,

Prabha³

et al. 2022

Opt Quant Electron

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Optical encoder is playing an essential starring role in optical communication and computing applications. This paper presents a new structure for 4 x 2 optical encoder based on Two Dimensional Photonic Crystals (2DPC). The proposed structure consists of silicon rods in background of air using hexagonal lattice. The proposed structure is composed of four input waveguides and two outputs. The band structure is examined by Plane Wave Expansion (PWE) method and the performance parameters of the 4x2 encoder, namely, normalized output power, footprint, contrast ratio, response time and bit rate are analyzed using Finite Difference Time Domain (FDTD) method. The proposed encoder is operated at 1550nm. The low response time, and small footprint have shown that the encoder is exceptionally suitable for high performance optical networks and photonic computational integrated devices.

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Design and optimization of photonic crystal based eight channel dense wavelength division multiplexing demultiplexer using conjugate radiant neural network

Cited by 24 publications

References 23 publications

Design and performance analysis of eight channel demultiplexer using 2D photonic crystal with trapezium cavity

Design and performance analysis of eight channel demultiplexer using 2D photonic crystal with trapezium cavity

Design and analysis of a photonic crystal-based biosensor for the detection of chikungunya virus

Investigation on ultra-compact, high contrast ratio 2D-photonic crystal based all optical 4 × 2 encoder

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