Design of a high bitrate optical decoder based on photonic crystals

Parandin, Fariborz; Karkhanehchi, Mohammad Mehdi; Naseri, Mosayeb; Zahedi, Abdulhamid

doi:10.1007/s10825-018-1147-3

Cited by 55 publications

(11 citation statements)

References 25 publications

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“…Unlike the two previous decoders with square lattice [7,8], the two following decoders [9,10] present a triangular lattice of the two-dimensional photonic crystal (a) A top view of the structure including four resonant cavities connected to W5, W6, W7, and W8 [7] (b) magnifying the cross-connection for inputs X and Y [7].…”

Section: Cavity-based Structuresmentioning

confidence: 99%

Photonic crystal-based decoders: ideas and structures

Javad Maleki,

Soroosh,

Parandin

et al. 2023

Recent Advances and Trends in Photonic Crystal Technology

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Recent developments in photonic crystal structures have enabled the implementation of optical decoders which possess superior features such as high contrast ratio and fast response. According to published reports, photonic crystal-based decoders exhibit contrast ratios higher than 20 dB and a response time as fast as 200 fs, making them an ideal candidate for high-speed processing applications. Resonant cavities and rings can be utilized to drop waves with high efficiency, thereby simplifying circuits and reducing the need for cross-connections. In this chapter, we provide an introduction to the decoding operation and its importance in various applications, followed by a discussion of fundamental features of photonic crystals such as photonic bandgap and the optical Kerr effect. We also consider the role of resonance in photonic crystals and present recent ideas and designed structures for the benefit of readers.

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Section: Cavity-based Structuresmentioning

confidence: 99%

Photonic crystal-based decoders: ideas and structures

Javad Maleki,

Soroosh,

Parandin

et al. 2023

Recent Advances and Trends in Photonic Crystal Technology

Self Cite

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“…Thus, waveguides in a PhC can be created by removing one or more rows of dielectric rods. PhC-based structures are excellent choices for designing many types of optical devices such as optical filters [3][4][5][6][7][8], PhC fibers [9][10][11][12][13][14][15][16][17][18], multiplexers and demultiplexers [19][20][21][22][23][24][25][26], encoders and decoders [27][28][29][30], switches [31][32][33][34][35][36], logic gates [37][38][39][40][41][42], analog to digital converters (ADCs) [43][44][45][46][47][48][49], and sensors [50]…”

Section: Photonic Sensorsmentioning

confidence: 99%

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

et al. 2020

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In view of the large scientific and technical interest in the MEMS accelerometer sensor and the limitations of capacitive, resistive piezo, and piezoelectric methods, we focus on the measurement of the seismic mass displacement using a novel design of the all-optical sensor (AOS). The proposed AOS consists of two waveguides and a ring resonator in a two-dimensional rod-based photonic crystal (PhC) microstructure, and a holder which connects the central rod of a nanocavity to a proof mass. The photonic band structure of the AOS is calculated with the plane-wave expansion approach for TE and TM polarization modes, and the light wave propagation inside the sensor is analyzed by solving Maxwell’s equations using the finite-difference time-domain method. The results of our simulations demonstrate that the fundamental PhC has a free spectral range of about 730 nm covering the optical communication wavelength-bands. Simulations also show that the AOS has the resonant peak of 0.8 at 1.644µm, quality factor of 3288, full width at half maximum of 0.5nm, and figure of merit of 0.97. Furthermore, for the maximum 200nm nanocavity displacements in the x- or y-direction, the resonant wavelengths shift to 1.618µm and 1.547µm, respectively. We also calculate all characteristics of the nanocavity displacement in positive and negative directions of the x-axis and y-axis. The small area of 104.35 µm2 and short propagation time of the AOS make it an interesting sensor for various applications, especially in the vehicle navigation systems and aviation safety tools.

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“…Photonic crystals have many capabilities in designing optical circuits. One of their applications is in digital circuits, so that they can be used in the design of logic gates [2][3][4][5][6][7], comparators [8-9], adders, subtractors [10][11][12][13], decoders, encoders [14][15][16][17] and other logic circuits.…”

Section: Introductionmentioning

confidence: 99%

Design of 2D photonic crystal biosensor to detect blood components

et al. 2022

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Photonic crystals are periodic structures made of insulators. They are the best option to design biosensors. In this paper, a photonic crystal biosensor containing insulation rods in the air was designed and simulated. This biosensor was used as a photonic crystal circular nano-ring between the internal and external waveguides. At the end of the internal waveguide, a defect exists to create an increase in the coupling distance. This causes the quality factor and resonant wavelength displacement to increase. The purpose of designing this sensor is to check blood ingredients. After connecting to a measuring rod, this sensor shows different refractive indices. Another important characteristic of the proposed structure is that mostly radiuses of dielectric rods are identical. This causes the sensor construction to be easy. The plane-wave expansion (PWE) method is utilized to calculate the band structure. The results show that a photonic band gap (PBG) with a wavelength from 1.26 μm to 1.92 μm is created in this distance where no wavelength can spread.

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Design of a high bitrate optical decoder based on photonic crystals

Cited by 55 publications

References 25 publications

Photonic crystal-based decoders: ideas and structures

Photonic crystal-based decoders: ideas and structures

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

Design of 2D photonic crystal biosensor to detect blood components

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