Low propagation loss of 0.76 dB/mm in GaAs-based single-line-defect two-dimensional photonic crystal slab waveguides up to 1 cm in length | Zendy

Yoshimasa Sugimoto | Zendy; Yu Tanaka | Zendy; Naoki Ikeda | Zendy; Yusui Nakamura | Zendy; Kiyoshi Asakawa | Zendy; Kuon Inoue | Zendy

Open Access

Low propagation loss of 0.76 dB/mm in GaAs-based single-line-defect two-dimensional photonic crystal slab waveguides up to 1 cm in length

Author(s) -

Yoshimasa Sugimoto,

Yu Tanaka,

Naoki Ikeda,

Yusui Nakamura,

Kiyoshi Asakawa,

Kuon Inoue

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.001090

Subject(s) - materials science , optics , photonic crystal , etching (microfabrication) , waveguide , slab , gallium arsenide , surface roughness , layer (electronics) , optoelectronics , core (optical fiber) , physics , geophysics , composite material , geology

Straight single-line-defect photonic crystal (PC) waveguides on GaAs slabs with lengths of 1, 4, and 10 mm have been fabricated. By controlling the Al content of a sacrificial AlGaAs clad layer and the wet etching duration, a PC core layer with a very smooth surface was obtained. Atomic force microscope images indicate that the roughness on the top surface is less than 1 nm. An extremely low propagation loss of 0.76 dB/mm for the GaAs-based PC waveguide was achieved.

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