Crosstalk reduction in a 10-GHz spacing arrayed-waveguide grating by phase-error compensation

被引：21

作者：

Yamada, H ^{[1
]}

Takada, K ^{[1
]}

Mitachi, S ^{[1
]}

机构：

[1] NTT Corp, Optoelect Labs, Tokai, Ibaraki 31911, Japan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1998年 / 16卷 / 03期

关键词：

optical crosstalk; optical planar waveguides; phased arrays; phase measurement; wavelength division multiplexing;

D O I：

10.1109/50.661362

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The crosstalk in arrayed-waveguide grating multiplexers with a channel spacing of 10 GHz is reduced by compensating for the phase errors after fabrication. We used the thermooptic effect realized with a thin-film heater and the photoelastic effect obtained with amorphous silicon film, respectively, for dynamic and static phase-error compensation. These two methods were applied to confirm the principle and to realize a stable, stand-alone device, respectively. We have achieved a crosstalk of less than -35 dB for the TE polarization mode in a 16 x 16, 10 GHz-spacing arrayed-waveguide grating by using these two phase-error compensation techniques. Static phase-error compensation results in a stable multiplexer which features a low crosstalk of less than -30 dB for one of the two polarization modes of all the channels without any external control equipment.

引用

页码：364 / 371

页数：8

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