Photonic crystal ring resonator based optical MUX/DEMUX design structures: a survey and comparison study

Masilamani, Sivasindhu; Samundiswary, P.

doi:10.1007/s12596-020-00601-x

Cited by 18 publications

(6 citation statements)

References 65 publications

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“…Thus, PhCs are great candidates for optical networks, optical communications and applications of optical signal processing (Joannopoulos et al 2011). Many PhCs based optical components have been reported such as: multiplexers (Rao et al 2021;Fasihi and Bashiri 2020;Zhao et al 2019), de-multiplexers (Mohammadi et al , 2021aMasilamani and Punniakodi 2020;Radhouene et al 2020;Mohammadi and Seifouri 2019;Kannaiyan et al 2017), full adders (Mohammadi et al 2021b;Naghizade and Saghaei 2021a;Maleki et al 2021a, b;Goswami et al 2021;Vali-Nasab et al 2019), analog-to-digital converters (Naghizade and Saghaei 2021b;Shamsi and Moradi 2020;Geng and Zhao 2020), optical filters (Foroughifar et al 2021), flip-flops (Zamanian-Dehkordi et al 2018;Abbasi et al 2012), comparators (Seraj et al 2020;Feng et al 2021;Cheng and Dadras Jeddi Pishkhani 2021;Zhu et al 2019;Jile 2020), optical logic gates (Kumar and Sen 2020;Kotb and Guo 2020;Saranya and Anbazhagan 2020;Caballero et al 2020;He et al 2020;Mostafa et al 2019a;Hussein et al 2018a, b;Olyaee et al 2018;Fu et al 2013;Caballero and Neto 2021) and all-optical encoders (Makvandi et al 2021;Rajasekar et al 2020;…”

Section: Introductionmentioning

confidence: 99%

New designs of 4 × 2 photonic crystal encoders using ring resonators

2023

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Optical encoders are pivotal elements in optical communication applications. There is much need for ultra-compact and high-speed novel designs. This work proposes two new designs of fast, compact 4 × 2 optical encoders using two dimensional photonic crystals. The proposed structures consist of square lattice silicon rods embedded in an air background. The operation of these encoders is based on the wave interference technique. The encoders are designed to help in achieving better performance through increasing the contrast ratio and decreasing the power loss and the return loss. The PWE method is used to analyze the photonic band gap. We used FDTD simulation to obtain the electric field distribution inside each structure and the normalized output power. We prove that the scattering rods improve the directivity of the light toward the desired paths and decrease the backward reflection. The proposed encoders have small footprint areas of 204.8 and 160.4 μm2 and operate at wavelength 1550 nm. They achieve low response time (254 and 163 fs) and high contrast ratio (6.69 and 12.9 dB). Simplicity and compactness of the designs make them suitable for optical signal processors and photonic integrated circuits. Another advantage of these designs is that low input power is enough for the encoders’ operation, because there is no non-linear materials included. Our designs compete with the published works in the last few years especially in their footprint and response time.

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Section: Introductionmentioning

confidence: 99%

New designs of 4 × 2 photonic crystal encoders using ring resonators

2023

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“…Photonic computing has already been proposed for human brain-like computing [2], programable photonic circuits [3] and photonic integrated circuits [4]. Keeping in mind the basic building block for electronic logic flow, the electronic transistor, different techniques to implement optical switching or optical transistor action have been under consideration such as ring resonators [5], cross-waveguide structures [6], optical pumping [7], hybrid electro-optical devices [8,9] and quantum dots [10]. Most of the device structures in the suggested techniques are complex to implement in large quantities such as in design and fabrication of a photonic integrated circuit [11].…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Optical Switch Based on Guided Mode Resonances in Dielectric Photonic Crystal Structures

et al. 2022

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In this work, a novel idea of optical switch design based on guided mode resonance in the photonic crystal structure is numerically investigated. The designed switching device work on the principle of optical amplification and wavelength shift of data signal with the help of a control signal. The data signal can be coupled into the waveguide using guided-mode resonance, whereas, a control signal is index-coupled into the waveguide to influence the data signal. The optical switching action is optimized by introducing a photonic crystal cavity and varying the number of photonic crystal elements, where the resonant wavelength, reflection peaks, linewidth, and quality factor of the data signal can be adjusted. The device is based on low refractive index contrast dielectric materials compatible with fiber optic communication and can operate in a near-infrared range of around 1.55 μm. The numerical simulations are carried out in an open source finite-difference time-domain-based software. An optical switching action is achieved with 7% amplification in the data signal at a central wavelength of 1.55 µm with a maximum shift of the wavelength of 0.001 µm. The proposed device can be easily implemented in cascade designs of programmable photonic and optical switching circuits.

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“…Photonic crystals are composed of alternating layers of insulating materials. PBG, as one of their unique properties [23][24][25], is de ned as a speci c frequency (or wavelength) range, in which the propagation of electromagnetic waves is prohibited in any direction and can be controlled by different structural parameters such as lattice constant, dielectric constant of the material and rod radius [26][27][28][29]. Electromagnetic waves propagate inside the PBG when a defect is formed.…”

Section: Introductionmentioning

confidence: 99%

Improved Low Crosstalk, High Transmission and Quality Factor Eight Channel Demultiplexer Based on Photonic Crystal

Azadi

Mohammadi

Olyaee

et al. 2022

Preprint

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Due to the importance of all-optical demultiplexers (DEMUXs) in optical communication networks, this study aims to design and simulate a novel type of DEMUX using 2D photonic crystals (2D-PhCs). The proposed structure consists of one input waveguide and eight output channels considering linear and point defects. To design this DEMUX, silicon dielectric rods with the refractive index of 3.45 are employed in the air background, the radius of which is equal to R=0.21Ʌ (Ʌ = 0.522µm) where Ʌ is the lattice constant. The photonic band gap (PBG) and output spectrum of the structure are analyzed by the plane wave expansion (PWE) and finite-difference time-domain (FDTD) methods, respectively. The simulation results indicate the average quality factor and transmission efficiency are 3,602 and 98%, respectively, and inter-channel crosstalk ranges from -60.5 to -25.5 dB.

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Photonic crystal ring resonator based optical MUX/DEMUX design structures: a survey and comparison study

Cited by 18 publications

References 65 publications

New designs of 4 × 2 photonic crystal encoders using ring resonators

New designs of 4 × 2 photonic crystal encoders using ring resonators

A Novel Design of Optical Switch Based on Guided Mode Resonances in Dielectric Photonic Crystal Structures

Improved Low Crosstalk, High Transmission and Quality Factor Eight Channel Demultiplexer Based on Photonic Crystal

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