Two variable optical delay schemes based on polarization and interference

被引：0
|
作者：
Zhao Jian-Ling
Wu Ling-An [1 ]
机构：
[1] Chinese Acad Sci, Natl Lab Condensed Matter Phys, Lab Opt Phys, Beijing 100190, Peoples R China
来源：
ACTA PHYSICA SINICA | 2010年 / 59卷 / 05期
基金：
中国国家自然科学基金;
关键词：
optical delay; variable; polarization; interference; TRUE TIME-DELAY; LINE;
D O I：
10.7498/aps.59.3260
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Variable optical delays have wide application in scientific research and optical communications. In this paper two different schemes to realize a variable optical delay are proposed, one based on polarization and the other on interference. A phase modulator is employed to restrict the signal pulse within an optical loop, and to release it when required. The delay time can be varied by adjusting the length of the loop and the number of cycles the pulse travels around it. Both types of delays are suitable for fiber systems, and can be made into a small package by means of integrated optics technology. The polarization scheme is also convenient for optical delays in free space.
引用
收藏
页码：3260 / 3263
页数：4
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