Mode switch based on electro-optic long-period waveguide grating in lithium niobate

被引：52

作者：

Jin, Wei ^{[1
]}

Chiang, Kin Seng ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

来源：

OPTICS LETTERS | 2015年 / 40卷 / 02期

关键词：

DIVISION MULTIPLEXED TRANSMISSION; 2-MODE FIBER; CONVERTERS;

D O I：

10.1364/OL.40.000237

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a mode switch based on an electro-optic long-period grating formed in a lithium-niobate (LN) two-mode waveguide. Our fabricated device consists of an 8 mm long grating in a proton-exchanged z-cut LN waveguide. At a driving voltage of 35 V, it can switch between the fundamental mode and the higher-order mode with a mode extinction ratio of -18 dB and a 3-dB bandwidth of similar to 25 nm at the wavelength 1544 nm. The performance of the device is insensitive to temperature variations. The experimental results agree well with the simulation. This mode switch could find applications in reconfigurable mode-division-multiplexing systems. (C) 2015 Optical Society of America

引用

页码：237 / 240

页数：4

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