Improved performance of laser written channel waveguides using a TEM01* beam

被引：14

作者：

Charters, RB ^{[1
]}

Luther-Davies, B ^{[1
]}

Ladouceur, F ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Australian Photon Cooperat Res Ctr, Canberra, ACT 0200, Australia

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1999年 / 11卷 / 12期

关键词：

integrated optics; laser modes; optical device fabrication; optical materials; optical waveguides;

D O I：

10.1109/68.806865

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：

Laser direct writing of single-mode waveguides with a TEM00 Gaussian laser beam results in laterally graded refractive index profiles. It is demonstrated that laser direct writing with a TEM01* "doughnut" laser beam produces a more steplike refractive index profile. We show theoretically that the bend loss of the photoinduced waveguides can be significantly reduced, and that the sensitivity of the guided mode parameters to experimental fluctuations in the laser writing process are improved. Differences between the two writing beam cases are assessed experimentally by photodefining curved channel waveguides in the polymeric material system BDK:PMMA.

引用

页码：1617 / 1619

页数：3

共 8 条

[1]

BENNION I, 1983, J I ELECTRON RAD ENG, V53, P313

[2]

CHARTERS RB, 1998, P 23 AUSTRAL C OPT F, P37

[3] Sol-gel channel waveguide on silicon: fast direct imprinting and low cost fabrication [J].