Title :
Multichannel Photonic Crystal Wavelength Filter Array for Near-Infrared Wavelengths
Author :
Ohtera, Yasuo ; Onuki, Teppei ; Inoue, Yoshihiko ; Kawakami, Shojiro
Author_Institution :
Biomed. Eng. Res. Organ., Tohoku Univ., Sendai
Abstract :
Multichannel wavelength filters consisting of 2-D photonic crystal (PhC) for the near-infrared wavelength region (~800 nm) are demonstrated. The filter is a thin-film wavy multilayer structure and is fabricated by the autocloning method, which is based on a radio frequency bias sputtering process. Twelve long-pass-type filter regions are integrated on a common silica substrate. Sharp cutoff characteristics and almost equal channel spacing are experimentally verified. To precisely control the effective lattice constant of PhC, a modulated lattice structure on the substrate is utilized
Keywords :
integrated optics; lattice constants; optical arrays; optical design techniques; optical fabrication; optical filters; optical multilayers; photonic crystals; sputter deposition; 800 nm; SiO2; autocloning method; channel spacing; filter array; lattice constant; long-pass-type filter regions; modulated lattice structure; multichannel wavelength filters; near-infrared wavelength region; photonic crystal; radiofrequency bias sputtering; silica substrate; thin-film wavy multilayer; Band pass filters; Lattices; Nonhomogeneous media; Optical filters; Optical imaging; Optical reflection; Photonic crystals; Radio frequency; Sputtering; Substrates; Autocloning; lattice modulation; photonic band gap (PBG); photonic crystal (PhC); wavelength filter;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.889094
