Corrugated Waveguide-Based Optical Phased Array With Crosstalk Suppression

被引：43

作者：

Kwong, David ^{[1
]}

Hosseini, Amir ^{[2
]}

Covey, John ^{[1
]}

Xu, Xiaochuan ^{[1
]}

Zhang, Yang ^{[1
]}

Chakravarty, Swapnajit ^{[2
]}

Chen, Ray T. ^{[1
]}

机构：

[1] Univ Texas Austin, Austin, TX 78758 USA

[2] Omega Opt Inc, Austin, TX 78759 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2014年 / 26卷 / 10期

关键词：

Optical waveguide; photonic integrated circuit; silicon nanomembrane; phased array; gratings; photonic crystal;

D O I：

10.1109/LPT.2014.2311454

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：

We present the corrugated waveguide as a free space grating coupler for use in optical phased arrays for large angle optical beam steering. Compared with conventional shallow etched gratings, the corrugated waveguide requires only a single patterning step while achieving lithographically defined index contrast. We achieve 15 of steering with wavelength tuning, with an average longitudinal beam width of 0.3 degrees. To prevent optical crosstalk from grating-assisted coupling in a corrugated waveguide array with small element spacing, the photonic bandgap of a 2D photonic crystal is used to optically isolate each array element in a 16 element array.

引用

页码：991 / 994

页数：4

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