New design of four-channel add-drop filters based on double-resonant cavity photonic crystals

Wu, Yaw‐Dong; Hsu, Ke-Wei; Shih, Tien‐Tsorng; Lee, Jian-Jang

doi:10.1364/josab.26.000640

Cited by 16 publications

(4 citation statements)

References 34 publications

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“…Such attenuation can be enhanced by minimising the adjacent air hole radius in all ports of the splitter as shown in Fig. 6 [21][22][23][24][25]. The second part of the encoder is the ODLs represented by a coupled cavity waveguide (CCW) [13].…”

Section: Ocdma Encoder Modelmentioning

confidence: 99%

BER performance of OCDMA system based on optimised 2D PhC passive encoder

Morsy

Alsayyari

2020

IET Communications

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Section: Ocdma Encoder Modelmentioning

confidence: 99%

BER performance of OCDMA system based on optimised 2D PhC passive encoder

Morsy

Alsayyari

2020

IET Communications

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“…[1] When waveguide and cavity are simultaneously introduced in a PhC, the coupled cavity-waveguide system can be designed to manipulate the transport of light. In the past two decades, a plethora of physical phenomena and practical applications such as Fano effects, [2,3] electromagnetically induced transparency, [4][5][6] sensors, [7,8] filters, [9][10][11] and all-optical buffers [12,13] have been demonstrated and realized based on the coupled cavity-waveguide systems. However, there are two main issues (in the traditional cavity-waveguide systems) that hinder the applications.…”

Section: Introductionmentioning

confidence: 99%

Phase‐Coupling‐Induced Far‐Field Modulation between Nontrivial and Trivial Modes in Cavity–Waveguide Systems

Zhan

Zang

Liu

et al. 2023

Advanced Photonics Research

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Photonic crystal (PhC) can be accurately designed to generate nontrivial and trivial modes, that is, edge states (ES)/corner states (CS) and cavity modes, respectively. The coupled cavity–waveguide system designed by PhC provides a chip‐scale platform to manipulate electromagnetic (EM) waves that is usually based on near‐field coupling between nontrivial and trivial modes. However, the far‐field interaction between nontrivial and trivial modes for manipulating EM waves has not attracted wide attention yet. Herein this article, the coupled cavity–waveguide systems, which consist of two separated CS cavities (interacting with single/multiple trivial cavity/cavities) coupled by means of an ES waveguide, are designed to robustly tune the transmission properties of EM waves by modulating the phase coupling between CS cavities. As proof‐of‐principle examples, single‐, dual‐, and triple‐electromagnetically‐induced‐transparency‐like (EIT‐like) phenomena with tunable transmission spectra are theoretically and numerically demonstrated by controlling the distance (generated phase accumulation) between the CS cavities. In addition, the robustness in generating EIT‐like transmission characteristics is also demonstrated due to the robustness of the CS cavities. The unique cavity–waveguide systems with unprecedented capability in robustly tuning the transmission spectra of EM waves can be extended to design other high‐performance devices with potential applications in sensing, detecting, and information processing.

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“…However, to our knowledge, most wavelength combiners based on PhCs operate in the communication wavelength band [7,8] while less attention has been paid to PhC wave combiners operating in visible bands. In particular, the material dispersion characteristics of PhCs have not been explored in the design of wave combiners.…”

Section: Introductionmentioning

confidence: 99%

Three-visible-light wave combiner based on photonic crystal waveguides

2014

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We present a three-visible-light wave combiner based on two-dimensional photonic crystal waveguides whose widths are not integral multiples of the lattice period. The proposed device consists of two cascaded directional couplers. It combines three visible light waves with different wavelengths from three input ports into a single output port. As an example, a combiner for combining light waves of 635, 532, and 488 nm, which are commonly used as the three primary colors in laser display systems, is designed and demonstrated through the finite-difference time-domain method. The results show that the proposed device can perform efficient synthesis for three visible light waves with transmittance exceeding 89% for each wavelength and high ability in preventing the backward coupling of waves from different waveguides. The method for designing the combiner is useful for designing other waveguide couplers based on photonic crystals made of dispersion materials.

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New design of four-channel add-drop filters based on double-resonant cavity photonic crystals

Cited by 16 publications

References 34 publications

BER performance of OCDMA system based on optimised 2D PhC passive encoder

BER performance of OCDMA system based on optimised 2D PhC passive encoder

Phase‐Coupling‐Induced Far‐Field Modulation between Nontrivial and Trivial Modes in Cavity–Waveguide Systems

Three-visible-light wave combiner based on photonic crystal waveguides

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