Design of multichannel filters based on the use of periodic Cantor dielectric multilayers

King, Tzu Chyang; Wu, Chien Jang

doi:10.1364/ao.53.006749

Cited by 10 publications

(4 citation statements)

References 20 publications

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“…This fractal structure can satisfy the condition of standing wave resonance of optical waves during transmission, thereby generating optical fractal effects and multiple fractal resonances. This special optical effect can be used to achieve the function of multi-channel filtering or wavelength division multiplexing [ 43 , 44 ]. In this work, we used the semiconductor material GaAs and the dielectric material TiO 2 to compose a one-dimensional distributed feedback Bragg photonic crystal.…”

Section: Introductionmentioning

confidence: 99%

Optical fractal in cryogenic environments based on distributed feedback Bragg photonic crystals

Zhao,

Chen,

Liu

et al. 2023

PLoS ONE

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We studied the optical fractal effect of the one-dimensional distributed feedback Bragg photonic crystals formed by semiconductor GaAs and dielectric TiO2. Light wave is transmitted in the intermediate dielectric slab and reflected back by the periodic photonic crystals at both ends, forming multiple fractal resonance output. The transmission channels expand exponentially by thickening the bulk in a cryogenic environment. The quality factor of each fractal resonant state improves with a greater periodic number of crystals. Furthermore, central wave of resonance has a blue-shift as the external pressure increases, while the influence of environment temperature on the fractal resonance could be ignored. It is hoped that our study can highlight the potential of these findings for designing multi-channel communication filters in cryogenic environments.

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Section: Introductionmentioning

confidence: 99%

Optical fractal in cryogenic environments based on distributed feedback Bragg photonic crystals

Zhao,

Chen,

Liu

et al. 2023

PLoS ONE

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“…Many excellent features and behaviors were concerned by the scientists around the word in the past twenty years. Such as, the self-similarity behavior of the reflectance and transmission spectra of Cantor type DSLs [ 16 ], the effective index and third order nonlinear susceptibilities of Cantor structures [ 17 ], the scaling properties of optical Cantor filters [ 18 ], the second harmonic generation and the third harmonic generation of Cantor type DSLs [ 19 ], the photonic bandgap behavior and the optical windows presence of one-dimensional triadic Cantor quasi-periodic structures [ 20 ], the tunable multichannel filter property based on the use of periodic Cantor dielectric multilayers [ 21 ], the second harmonic generation in Cantor like metamaterial photonic superlattices [ 22 ], the unidirectional absorption properties of the defective asymmetric Cantor photonic crystals [ 23 ], the self-similarity feature of complex quasi-periodic Fibonacci and Cantor photonic crystals [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Photonic passbands induced by optical fractal effect in Cantor dielectric multilayers

et al. 2022

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We investigate the splitting and incorporation of optical fractal states in one-dimensional photonic quasi-crystals. The aperiodic crystals which are composed of two different dielectrics submit to Cantor sequence. Defects in Cantor crystals can greatly enhance the localization of electric field, which induces the optical fractal effect. The number of optical fractal states increases exponentially with the generation number of Cantor sequence. Moreover, the optical fractal characteristics depend on the incident angle of light, of which the fractal states may split/incorporate by modulating the value of incident angle. This study could be utilized for band-pass filters and reflectors.

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“…They can be used both at optical and lower frequencies for various purposes. Filtering devices [2][3][4][5], high reflective [6][7][8][9] and low reflective coatings [10], field concentrators [11,12] can be realized by using dielectric multilayers.…”

Section: Introductionmentioning

confidence: 99%

Broadband reflectors with a disordered layered structure: statistical properties of high performing configurations selected via genetic algorithm

Fiumara¹,

Addesso²,

Chiadini³

et al. 2022

J. Opt.

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Disordered multilayers consisting of alternating layers of two lossless dielectric materials with random thicknesses can behave as good reflectors in wide wavelength ranges except for narrow bands where the transmittance is significative. We use a dedicated genetic algorithm to select different configurations (thickness sequences) of such structures which exhibit very low transmittance in the entire visible wavelength range, showing that broadband disordered reflectors with very high performance can be designed. A statistical analysis of the thickness sequences selected by the genetic algorithm reveals that such sequences are characterized by correlated disorder and that the degree of autocorrelation is a key parameter in determining the reflection performance.

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Design of multichannel filters based on the use of periodic Cantor dielectric multilayers

Cited by 10 publications

References 20 publications

Optical fractal in cryogenic environments based on distributed feedback Bragg photonic crystals

Optical fractal in cryogenic environments based on distributed feedback Bragg photonic crystals

Photonic passbands induced by optical fractal effect in Cantor dielectric multilayers

Broadband reflectors with a disordered layered structure: statistical properties of high performing configurations selected via genetic algorithm

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