Poling-inhibited ridge waveguides in lithium niobate crystals

被引：14

作者：

Sones, C. L. ^{[1
]}

Ganguly, P. ^{[2
]}

Ying, C. Y. J. ^{[1
]}

Soergel, E. ^{[3
]}

Eason, R. W. ^{[1
]}

Mailis, S. ^{[1
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

[2] Indian Inst Technol, Adv Technol Dev Ctr, Kharagpur 721302, W Bengal, India

[3] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 15期

关键词：

PROTON-EXCHANGE; LINBO3; WAVEGUIDES; MODULATOR; ETCH;

D O I：

10.1063/1.3504698

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ultraviolet laser irradiation of a lithium niobate +z polar surface enables the production of ridge waveguides. Ultraviolet laser induced inhibition of poling is used to define an inverted domain pattern which transforms into a ridge structure by differential etching in hydrofluoric acid. The laser irradiation step also induces a refractive index change that provides the vertical confinement within the ridge structure. Furthermore, it was observed that poling-inhibition results in a significant enhancement of the refractive index contrast between the bulk crystal and the ultraviolet irradiated tracks. (C) 2010 American Institute of Physics. [doi:10.1063/1.3504698]

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页数：3

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