Complex photosensitivity observed in germanosilica planar waveguides

被引：15

作者：

Bazylenko, MV ^{[1
]}

Moss, D ^{[1
]}

Canning, J ^{[1
]}

机构：

[1] Australian Photon Cooperat Res Ctr, Opt Fibre Technol Ctr, Natl Innovat Ctr 101, Eveleigh, NSW 1430, Australia

来源：

OPTICS LETTERS | 1998年 / 23卷 / 09期

关键词：

D O I：

10.1364/OL.23.000697

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photosensitive effects distinguished as type I and type IIA photosensitivity within optical fibers were observed in a much more pronounced form within germanosilica waveguides deposited by hollow-cathode plasma-enhanced chemical-vapor deposition. With increasing exposure to 193-nm UV light, positive index changes greater than 2 x 10(-3) were observed, followed by negative index changes greater than -5 x 10(-3). These behaviors are attributed to an increase in macroscopic polarizability and a reduction in material density, respectively. The negative index change is more temperature resistant and is fully annealed only at 900 degrees C, whereas the positive one is annealed at 500 degrees C. (C) 1998 Optical Society of America.

引用

页码：697 / 699

页数：3

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