1.5%-Δ athermal arrayed-waveguide grating multi/demultiplexer with very low loss groove design

Author

Kamei, Shin ; Iemura, Koki ; Kaneko, Akimasa ; Inoue, Yasuyuki ; Shibata, Tomohiro ; Takahashi, Hiroshi ; Sugita, Akio

Author_Institution

NTT Photonics Labs., NTT Corp., Kanagawa, Japan

Volume

17

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

588

Lastpage

590

Abstract

We describe a compact 1.5%-Δ athermal silica-based 100-GHz-spacing 16-channel arrayed-waveguide grating (AWG) multi/demultiplexer with a modified groove design for a very low excess loss. We propose new approaches for modifying the shape of the grooves and the arrayed waveguides and optimize the shape modifications for 1.5%-Δ waveguides. By employing this modified groove design, we greatly reduced the groove excess loss from 1.9 to 0.4 dB in the 1.5%-Δ athermal AWG.

Keywords

arrayed waveguide gratings; channel spacing; demultiplexing equipment; multiplexing equipment; optical design techniques; optical fabrication; optical fibre communication; optical losses; 16-channel AWG; AWG fabrication; SiO₂; arrayed waveguides; arrayed-waveguide grating; athermal AWG; demultiplexer; groove excess loss; low loss groove design; modified groove design; multiplexer; shape modification; silica-based AWG; Arrayed waveguide gratings; Optical arrays; Optical losses; Optical planar waveguides; Optical waveguide components; Optical waveguides; Phased arrays; Planar waveguides; Shape; Wavelength division multiplexing; Demultiplexing; gratings; optical components; optical fiber communication; phased arrays; planar waveguides; waveguide filters; wavelength-division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.840990

Filename

1396023