Theoretical investigation on communication bandwidth of an orthogonal symmetry-based photonic crystal waveguide for wavelength division multiplexing

Yamaguchi, Toshihisa; Morifuji, Masato

doi:10.1016/j.photonics.2020.100892

Cited by 7 publications

(6 citation statements)

References 22 publications

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“…In the previous investigation, 18) we calculated wavelength bandwidths, propagation losses, and coupling efficiencies of the OLW structures with Δs = 0, Δs = 0.025 a, and Δs = 0.050 a. The results showed that they may have a bandwidth of 20 nm.…”

Section: Resultsmentioning

confidence: 99%

“…Here, a was 370 nm, slightly different from our previous value of 360 nm. 18) Since we had made some samples with a = 360 nm and their peak wavelengths were shorter than the 1.3 μm range, i.e. our goal wavelength range, we increased a to 370 nm to elongate the peak wavelength.…”

Section: Structure and Fabrication Processmentioning

confidence: 99%

“…If the wavelength interval is about 0.5 nm, cross-talk may occur due to the small wavelength interval. In the previous investigation, 18) we theoretically proposed a new waveguide structure called the orthogonal lattice waveguide (OLW). It will have a communication bandwidth of 20 nm, which will be twice that of the W1 waveguide.…”

Section: Introductionmentioning

confidence: 99%

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Investigating wavelength bandwidth of orthogonal lattice waveguide for circular defect in two-dimensional photonic crystal (CirD) lasers

Zuo

Hirata

Aomori

et al. 2023

Jpn. J. Appl. Phys.

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To achieve wavelength division multiplexing of optical communications for short distances, we have theoretically investigated a photonic crystal waveguide we call an orthogonal lattice waveguide (OLW), which may have a communication wavelength bandwidth of about 20 nm. In this paper, we fabricate CirD laser structures with air cladding layers and OLWs of different cavity radii. We confirm that the light emitted from the OLW is the light generated in the cavity. OLW has a wavelength bandwidth of about 20 nm, which agrees with the results of our previous theoretical study. The wavelength shift is about 4 nm when the radius of the circular defect cavity increases by 0.01 a, where a is the lattice constant.

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Section: Resultsmentioning

confidence: 99%

Section: Structure and Fabrication Processmentioning

confidence: 99%

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Investigating wavelength bandwidth of orthogonal lattice waveguide for circular defect in two-dimensional photonic crystal (CirD) lasers

Zuo

Hirata

Aomori

et al. 2023

Jpn. J. Appl. Phys.

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“…Photonic crystals have predominant performances such as flexibility in structure, ultra-small device sizes and low losses. The WDM is one of the most interesting fields of photonic crystals applications [20][21][22]. Multichannel filters play an important role in the WDM systems.…”

Section: Introductionmentioning

confidence: 99%

Multichannel filtering properties of one-dimensional graphene photonic crystals with high refractive index media layer

2023

Phys. Scr.

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Graphene photonic crystals have been attracting increasing attention due to their distinctive properties. In this work, the multichannel filtering performance of a one-dimensional graphene photonic crystal structure is theoretically investigated in the optical communication band. The graphene photonic crystal composed of a stack of alternating layers of dielectric material with high refractive index and graphene sheet. The influence of several structural parameters on the filtering performance of this structure was analyzed using the transfer matrix method. It is shown that the channel number and channel spacing of the multichannel filter can be adjusted by changing the period number and the dielectric constant and thickness of the high refractive index material. The multichannel filtering properties of this graphene structure have potential applications in wavelength division multiplexing systems.

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“…We have previously demonstrated, through both simulations and experiments, that the OLW possesses a bandwidth of 20 nm, supporting 20-channel WDM with minimal crosstalk interference. [26,27] The lattice constant a for each sample is set to 360 nm, and the radius of the air holes r is set to 110 nm. The radius of the CirD cavity R, defined as the distance from the center of the cavity to the center of the air hole forming the cavity, is fabricated in two variations: R = 2.76a and R = 2.77a.…”

Section: Introductionmentioning

confidence: 99%

Investigation into Oxidation Width of AlGaO_x Cladding Layer for Circular Defect in 2D Photonic Crystal Laser

Zuo,

Ye,

Kinoshita

et al. 2023

Physica Status Solidi (a)

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A circular defect in 2D photonic crystal (CirD) lasers is developed, which has the potential to achieve a target communication density of 10 Pbps cm−2 for intrachip optical communications by vertical current injection. The AlGaOx cladding layer's oxidation width strongly influences the device's light confinement and electronic resistance. Herein, samples with different oxidation widths are fabricated and the relationship between threshold power and oxidation width through photoexcitation is revealed. The optimal range of the oxidation width is found to be 349–439 nm, which can ensure low electronic resistance and low threshold power.

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Theoretical investigation on communication bandwidth of an orthogonal symmetry-based photonic crystal waveguide for wavelength division multiplexing

Cited by 7 publications

References 22 publications

Investigating wavelength bandwidth of orthogonal lattice waveguide for circular defect in two-dimensional photonic crystal (CirD) lasers

Investigating wavelength bandwidth of orthogonal lattice waveguide for circular defect in two-dimensional photonic crystal (CirD) lasers

Multichannel filtering properties of one-dimensional graphene photonic crystals with high refractive index media layer

Investigation into Oxidation Width of AlGaO_x Cladding Layer for Circular Defect in 2D Photonic Crystal Laser

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Theoretical investigation on communication bandwidth of an orthogonal symmetry-based photonic crystal waveguide for wavelength division multiplexing

Cited by 7 publications

References 22 publications

Investigating wavelength bandwidth of orthogonal lattice waveguide for circular defect in two-dimensional photonic crystal (CirD) lasers

Investigating wavelength bandwidth of orthogonal lattice waveguide for circular defect in two-dimensional photonic crystal (CirD) lasers

Multichannel filtering properties of one-dimensional graphene photonic crystals with high refractive index media layer

Investigation into Oxidation Width of AlGaOx Cladding Layer for Circular Defect in 2D Photonic Crystal Laser

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Investigation into Oxidation Width of AlGaO_x Cladding Layer for Circular Defect in 2D Photonic Crystal Laser