Characterizations of Zn-diffused lithium niobate directional coupler by post thermal-treatment

被引：0
作者：
Twu, RC [1 ]
Wang, WS [1 ]
机构：
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan
来源：
OPTOELECTRONIC MATERIALS AND DEVICES II | 2000年 / 4078卷
关键词：
coupling coefficient; Zn-diffused; directional coupler; lithium niobate; thermal-treatment;
D O I：
10.1117/12.392172
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A study of fine adjustment of the coupling coefficient of Zn-diffused directional couplers on Z-cut lithium niobate substrate by a series of post thermal-treatment is presented for the first time. Optical mode profiles and propagation losses before and after the treatments are measured for the 1.32 mu m wavelength. Experimental results show that the post thermal-treatment is quite efficient for fine adjustment of the cross coupling power ratio of the directional coupler.
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页码：437 / 444
页数：8
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