Reduction of Second-Order Temperature Dependence of Silica-Based Athermal AWG by Using Two Resin-Filled Grooves

Author

Hirabayashi, Katsuhiko ; Koshobu, Nobutatsu ; Kobayashi, Junya ; Itoh, Mikitaka ; Kamei, Shin

Author_Institution

NTT Photonics Labs., NTT Corp., Atsugi, Japan

Volume

23

Issue

11

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

676

Lastpage

678

Abstract

We devise a novel design for an athermal silica-based arrayed-waveguide grating (AWG) to reduce the residual second-order temperature dependence of conventional athermal AWGs with a silicone-filled groove. This athermal AWG has two grooves filled with silicone and polyolefin that compensate for the first- and second-order temperature dependence, respectively. The passband wavelength variation is successfully reduced from 80 to 16 pm in a -40°C ~ +80°C temperature range.

Keywords

arrayed waveguide gratings; optical design techniques; silicones; SiO₂; arrayed-waveguide grating; passband wavelength variation; polyolefin; second-order temperature dependence; silica-based athermal AWG; silicone-filled groove; temperature -40 degC to 80 degC; two resin-filled grooves; Arrayed waveguide gratings; Passband; Plastics; Resins; Temperature dependence; Temperature distribution; Temperature measurement; Arrayed-waveguide grating (AWG); ROADM; dn/dT; planar lightwave circuit; silicone; temperature dependence of refractive index; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2122252

Filename

5722972