Ultrasmall arrowhead arrayed-waveguide grating with V-shaped bend waveguides

Author

Suzuki, Takanori ; Tsuda, Hiroyuki

Author_Institution

Sch. of Integrated Design Eng., Keio Univ., Yokohama, Japan

Volume

17

Issue

4

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

810

Lastpage

812

Abstract

The ultrasmall arrowhead arrayed-waveguide grating (AWG) with integrated waveguide mirrors has been proposed. The v-shaped bend waveguides, using integrated waveguide elliptic mirrors, were applied to the arrayed waveguide to reduce the AWG size. The small footprint leads to a low-cost waveguide device and decreases the phase error resulting from refractive index fluctuations. The eight-channel 40-GHz-spacing arrowhead AWG was fabricated from silica, with a refractive index difference of 0.75%. The size of this arrowhead AWG was 1.3 × 11.6 mm, being 1/10 of the size of the conventional one. The insertion loss and the adjacent crosstalk were 8.31 and -28.3 dB, respectively.

Keywords

arrayed waveguide gratings; integrated optics; mirrors; optical communication equipment; optical crosstalk; optical fabrication; optical losses; refractive index; silicon compounds; waveguide discontinuities; -28.3 dB; 320 GHz; 40 GHz; 8.31 dB; SiO₂; V-shaped bend waveguides; crosstalk; insertion loss; integrated waveguide elliptic mirrors; phase error; refractive index fluctuations; ultrasmall arrowhead arrayed-waveguide grating; Arrayed waveguide gratings; High speed optical techniques; Mirrors; Optical arrays; Optical crosstalk; Optical refraction; Optical variables control; Optical waveguides; Refractive index; Silicon compounds; Gratings; integrated optics; mirrors; optical planar waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.844005

Filename

1411884