Paper
29 August 2002 Electro-optical polarization controller based on Solc filter in periodically poled lithium niobate
Jianhong Shi, Xianfeng Chen, YuXing Xia, Yingli Chen
Author Affiliations +
Proceedings Volume 4905, Materials and Devices for Optical and Wireless Communications; (2002) https://doi.org/10.1117/12.481047
Event: Asia-Pacific Optical and Wireless Communications 2002, 2002, Shanghai, China
Abstract
Polarization controller (PC) for optical fiber is a major area of study in the general field of coherent-optical communication systems. In communication systems based on single-mode fiber, the states of polarization in fiber vary randomly due to temperature variations and mechanical perturbations along the fiber. These polarization changes can have a detrimental impact on polarization sensitive components. Recently, more and more research attentions have been paid to a new artificial nonlinear material: the periodically poled LiNbO3 (PPLN) because of its outstanding nonlinear optical properties. In this paper, we analytically proposed an electrical tuned polarization controller based on a single chip of Z-cut LiNbO3 crystal. The first part is a Z-cut lithium niobate and the second part is periodically poled. The electric field is applied along the transverse and longitude directions for the separated part to implement the electro-optical polarization controller, respectively. With two electric fields applied by special control algorithms, the first part can transform an incident light with arbitrary ellipsoid polarization into a linearly polarized light and the second part will turn this linearly polarized light to a fixed linearly polarized light. Furthermore, if we use PPLN waveguide to fabricate such a device, only about 10V maximum driven voltage is needed for each stage, which is very attractive.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jianhong Shi, Xianfeng Chen, YuXing Xia, and Yingli Chen "Electro-optical polarization controller based on Solc filter in periodically poled lithium niobate", Proc. SPIE 4905, Materials and Devices for Optical and Wireless Communications, (29 August 2002); https://doi.org/10.1117/12.481047
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KEYWORDS
Polarization

Crystals

Electro optics

Electronics

Lithium niobate

Polarization control

Telecommunications

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