Compact eight-channel wavelength demultiplexer using modified photonic crystal ring resonators for CWDM applications

Rakhshani, Mohammad Reza

doi:10.1007/s11107-020-00879-8

Cited by 14 publications

(1 citation statement)

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“…The crosstalk ranged from -40 to -16 dB [53]. Rakhshani (2020) presented an 8-channel DEMUX based on 2D-PhCs and reported the quality factor, transmission coe cient and average inter-channel crosstalk of 1,000, 96% and -35 dB, respectively [54]. Reviewing the reported DEMUXs, this paper aims to address the shortcomings of previous structures such as transmission e ciency, quality factor and inter-channel crosstalk.…”

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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Section: Introductionmentioning

confidence: 99%