Junichi Hasegawa and Kazutaka Nara
Abstract
The authors have clarified the cause of the temperature dependence in athermal Arrayed Waveguide Grating (AWG) modules of conventional type, and have developed a new athermal AWG module of wide operating temperature range having a reduced temperature dependence. The temperature dependence of the center wavelength of the developed module is not more than ±0.015 nm for all channels over a temperature range of -30~70°C. A series of reliability tests have been carried out assuming outdoor installation of the module, and it has been confirmed that the module has extremely high reliability.
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