Wavelength filter using twin one-dimensional photonic crystal cavity silicon waveguides

• Published in: Electronics letters Vol. 55; no. 2; pp. 107 - 109
• Main Authors: Okayama, H, Onawa, Y, Shimura, D, Takahashi, H, Yaegashi, H, Sasaki, H
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 24.01.2019
• Subjects: 1D‐PhC; distinct transmission peaks; elemental semiconductors; finite difference time‐domain analysis; integrated optics; one‐directional output; optical filters; optical waveguides; photonic crystals; Photonics; silicon; stop band; three‐dimensional finite difference time domain simulation; twin one‐dimensional photonic crystal cavity silicon waveguides; wavelength filter; wavelength filter; 1D-PhC; optical waveguides; one-directional output; twin one-dimensional photonic crystal cavity silicon waveguides; elemental semiconductors; optical filters; three-dimensional finite difference time domain simulation; silicon; distinct transmission peaks; Si; stop band; photonic crystals; finite difference time-domain analysis; integrated optics
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2018.7469

A wavelength filter using a pair of one-dimensional photonic crystal (1D-PhC) waveguides incorporating cavity sections for one-directional output is reported. The small number of holes for 1D-PhC is used to attain distinct transmission peaks in the stop band. Two cavity sections are used to obtain peak with steep slope and widened top. The three-dimensional finite difference time domain simulation results agree with the experimental result.