PREPARATION OF SUBSTITUTED Y3FE5O12 SINGLE-MODE BURIED WAVE-GUIDES ON A [1 0 0] ORIENTED GD3GA5O12 SUBSTRATE

被引：2

作者：

KATOH, Y

SUGIMOTO, N

TATE, A

SHIBUKAWA, A

机构：

[1] NTT Opto-Electronics Laboratories, Tokai, Ibaraki

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1993年 / 32卷 / 4A期

关键词：

GARNET; OPTICAL WAVE-GUIDE; OPTICAL ISOLATOR; BURIED CHANNEL WAVE-GUIDE;

D O I：

10.1143/JJAP.32.L508

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A [100] oriented Gd3Ga5O12 (GGG) substrate is used to prepare a [011BAR] direction buried channel waveguides of flux grown substituted Y3Fe5O12 (YIG) films. Substituted YIG films are employed as a core as well as claddings. Ion-beam etching is used to form core ridges. Smooth side walls of core ridges are obtained after the soaking in hot phosphoric acid due to the good symmetry of garnet crystal. A well confined circular single-mode near-field intensity pattern is observed at lambda = 1.55 mum for waveguides less than 7 mum wide. Although the deviation is large, one of the waveguides exhibits a low propagation loss of less than 1 dB/cm which is comparable to the propagation loss of the film.

引用

页码：L508 / L510

页数：3

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