New design of an optical diplexer based on Core-shell rods defect in photonic-crystal

Bounaas, Faiza; Chergui, Imane; Labbani, Amel

doi:10.1109/icaee53772.2022.9962125

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Signi cant attempts have been made to study the theoretical and experimental properties of optical devices based on photonic crystal couplers with the aim of achieving shorter coupling lengths and improved performance [4][5][6][7]. Photonic crystal couplers play a crucial role in many optical communication systems such as optical logic gates [8,9] ,optical splitter [10,11] ,optical switches [12][13][14],sensors [15,16], lters [17,18],and demultiplexers [19][20][21][22]. These devices provide advantages such as reduced crosstalk, compact size and high e ciency.…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Photonic Crystal Directional Coupler with Ultra Short Coupling Length Using Core /Shell Rods Defect

Chergui,

Labbani

2023

Silicon

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In this paper, a novel method to diminish the coupling length and enhance the coupling coe cient in a two-dimensional (2D) photonic crystal (PC) directional coupler (DC)is investigated. The DC comprises two closely spaced linear waveguides separated by one row of silicon columns. In this new approach, we used core/shell (C/S) rods between the waveguides to reduce the coupling length. The C/S rod is obtained by etching a hole in the middle of the silicon rod. This modi cation leads to a very short coupling length of 5a, where a is the lattice constant of the structure. Simulation results show that increasing the inner core radius increases the coupling coe cient. The coupling properties have been numerically simulated and analyzed using the nite difference time domain (FDTD) and the plane-wave expansion (PWE) methods. Based on the modi ed structure, we analyzed the output spectrum of a very compact channel drop lter. The proposed modi ed design would offer signi cant potential for novel ultrasmall devices based on photonic crystal couplers.

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Section: Introductionmentioning

confidence: 99%

A Novel Design of Photonic Crystal Directional Coupler with Ultra Short Coupling Length Using Core /Shell Rods Defect

Chergui,

Labbani

2023

Silicon

Self Cite

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show abstract

Section: Introductionmentioning

confidence: 99%

A Novel Design of Photonic Crystal Directional Coupler with Ultra Short Coupling Length Using Core /Shell Rods Defect

Chergui,

Labbani

2023

Preprint

Self Cite

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In this paper, a novel method to diminish the coupling length and enhance the coupling coefficient in a two-dimensional (2D) photonic crystal (PC) directional coupler (DC)is investigated. The DC comprises two closely spaced linear waveguides separated by one row of silicon columns. In this new approach, we used core/shell (C/S) rods between the waveguides to reduce the coupling length. The C/S rod is obtained by etching a hole in the middle of the silicon rod. This modification leads to a very short coupling length of 5a, where a is the lattice constant of the structure. Simulation results show that increasing the inner core radius increases the coupling coefficient. The coupling properties have been numerically simulated and analyzed using the finite difference time domain (FDTD) and the plane-wave expansion (PWE) methods. Based on the modified structure, we analyzed the output spectrum of a very compact channel drop filter. The proposed modified design would offer significant potential for novel ultrasmall devices based on photonic crystal couplers.

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Optical Triplexer and Diplexer Filter Using Two-Dimensional Photonic Crystal

Jayanth,

Peter,

Santhosh

2023

J Opt

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New design of an optical diplexer based on Core-shell rods defect in photonic-crystal

Cited by 3 publications

References 12 publications

A Novel Design of Photonic Crystal Directional Coupler with Ultra Short Coupling Length Using Core /Shell Rods Defect

A Novel Design of Photonic Crystal Directional Coupler with Ultra Short Coupling Length Using Core /Shell Rods Defect

A Novel Design of Photonic Crystal Directional Coupler with Ultra Short Coupling Length Using Core /Shell Rods Defect

Optical Triplexer and Diplexer Filter Using Two-Dimensional Photonic Crystal

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