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Furukawa Review No.24

Temperature-Insensitive (Athermal) AWG Modules

Tsunetoshi Saito, Kazutaka Nara, Kanji Tanaka, Yoshinobu Nekado, Jun'ichi Hasegawa and Kazuhisa Kashihara

Abstract

High-performance temperature-insensitive (athermal) arrayed waveguide grating (AWG) modules have been developed to meet the need to reduce the consumption of DWDM systems and eliminate electric power for optical components. Employing a unique temperature-insensitive technique that is applicable to all sorts of AWGs, we have fabricated athermal AWG modules of the 100-GHz x 32-ch (Gaussian) and 100-GHz x 42-ch (semi-flat) types. At temperatures from 0 to 70°C, center wavelength shift and insertion loss variation were less than ±0.015 nm and ±0.1dB respectively, and it was confirmed that the optical characteristics of the developed athermal AWGs showed high stability. It was also confirmed that they exhibit high reliability by reliability tests based on Telcordia GR-1209 and GR-1221.

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