Band gap studies of 2D photonic crystals with hybrid scatterers

Liu, Wenlong; Liou, Yeuh−Yeong; Wei, J.C.; Yang, Tzong–Jer

doi:10.1016/j.physb.2009.08.026

Cited by 16 publications

(4 citation statements)

References 23 publications

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“…The crucial importance of PBG in these artificial structures had attracted a great deal of interest toward studying and investigating the PBG's properties in different kinds of PhCs. According to these investigations and the published articles in the literature, the PBG region in 2D PhCs depends on the refractive index of the dielectric materials, the shape of the rods, the crystal structure, the radius of the rods and the lattice constant of the structure [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 95%

Channel-drop filter based on a photonic crystal ring resonator

Mehdizadeh

Alipour-Banaei

Serajmohammadi

2013

J. Opt.

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Photonic crystal ring resonators are promising candidates for realizing all optical filters with acceptable transmission efficiency and quality factor values. In this paper, by putting a hexagon-shaped structure at the middle of on 7 × 7 square cavity we created a ring resonator structure and designed a channel drop filter. The drop wavelength of our filter is at 1550.4 nm, with transmission efficiency and quality factor equal to 94% and 707, respectively. Our structure is composed of dielectric rods immersed in air. Because in this kind of structures the dominant band gap is in TM mode, all of our simulations have been done in TM mode. The total footprint of our filter is 199.4 μm 2 , which makes it suitable for all optical integrated circuits.

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Section: Introductionmentioning

confidence: 95%

Channel-drop filter based on a photonic crystal ring resonator

Mehdizadeh

Alipour-Banaei

Serajmohammadi

2013

J. Opt.

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“…PC structures are useful in many applications where spatial localization of light is required. The PBG of PC structures is usually tuned by changing the refractive index of the materials, the shape and size of the rods or holes and the period of the structures [6][7][8][9][10]. The idea of a PBG allows a PC to be used for realization of micro/nanoscale integrated photonic devices, for example optical filters [11,12], reflectors [13], switches [14,15], logic gates [16][17][18], lasers [19], modulators [20,21], sensors [22,23], optical bends and splitters [24], optical switching [25], demultiplexers [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44], channel drop filters (CDFs) [45][46][47][48][49][50]…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a channel drop filter and demultiplexer based on a photonic crystal super ellipse-shaped ring resonator

Radhouene¹,

Gharsallah²,

Balaji³

et al. 2022

Laser Phys.

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In advanced optical communication systems, a photonic crystal (PC) based channel drop filter (CDF) and dense wavelength division multiplexer (DWDM) demultiplexer are essential components in the design of a complete DWDM system, which offers a high transmission data rate. In the present work, a novel PC, CDF filter and demultiplexer based on a ring resonator with a super ellipse shape is designed and analyzed. To design a high-performance device, the performance parameters of the proposed components, such as transmission efficiency, spectral line width, channel spacing, Q-factor and crosstalk, are investigated. The proposed CDF is designed to drop a resonant wavelength with a high quality factor of 3955, and the ring resonator design is extended to the demultiplexer. The demultiplexer is designed to drop the four resonant wavelengths of 1579.8 nm, 1582 nm, 1583.6 nm and 1574.9 nm, respectively. The observed high quality factor (3955), bandwidth (0.4 nm) and transmission efficiency (90%) of the proposed demultiplexer will support high-performance DWDM systems

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“…The arrangement of these two dielectric materials is such that the distribution of refractive index is periodic. According to the periodicity, these artificial structures can be demonstrated in three categories: 1D, 2D and 3D PhCs [5,6]. Similar to semiconductor devices, the periodicity in distribution of refractive index results in a wavelength band at which no photons or electromagnetic waves are allowed to propagate inside the PhC [7,8].…”

Section: Introductionmentioning

confidence: 99%

Very compact photonic crystal resonant cavity for all optical filtering

2014

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In this paper, an all-optical filter is proposed which employs a resonant cavity localized between input and output waveguides as wavelength selecting part of the filter. We study the impact of different parameters on the filtering of the structure using plane wave expansion and finite difference time domain methods. We also study the effect of the output waveguide position on the performance of the filter and results show that the proper position of the output waveguide is straight to the center of the resonant cavity. The initial form of filter is capable of selecting the optical waves at k = 1,554.2 nm and the transmission efficiency of the filter is obtained about 100 %. The total footprint of the filter is \76 lm 2 . High transmission efficiency, simplicity of design and compact size are the most significant advantages of filter.

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Band gap studies of 2D photonic crystals with hybrid scatterers

Cited by 16 publications

References 23 publications

Channel-drop filter based on a photonic crystal ring resonator

Channel-drop filter based on a photonic crystal ring resonator

Design and analysis of a channel drop filter and demultiplexer based on a photonic crystal super ellipse-shaped ring resonator

Very compact photonic crystal resonant cavity for all optical filtering

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