Title :
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
fDate :
3/1/2005 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.840990
