Segmented photorefractive waveguides in LiNbO3:Fe

被引：23

作者：

Matoba, O ^{[1
]}

Inujima, T ^{[1
]}

Shimura, T ^{[1
]}

Kuroda, K ^{[1
]}

机构：

[1] Univ Tokyo, Inst Ind Sci, Minato Ku, Tokyo 106, Japan

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1998年 / 15卷 / 07期

关键词：

D O I：

10.1364/JOSAB.15.002006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose what is, to our knowledge, a novel technique for fabricating a segmented waveguide by optical irradiation in a photorefractive LiNbO3:Fe crystal. The waveguide consists of many localized high-refractive-index regions that are fabricated by illumination of a focused laser beam. We fabricate straight, curved, and Y-branch waveguides. In the straight waveguides the transmitted power of a guided beam as a function of the period of segmentation and the dark decay time are measured. The tolerance for fabrication errors is also investigated both experimentally and numerically. The fabricated waveguide can be optically modified. We demonstrate that a curved structure can be transformed into a Y-branch structure. (C) 1998 Optical Society of America.

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页码：2006 / 2012

页数：7

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