Numerical modeling for liquid crystal optical phased array and its phase delay characteristic

Lin Xu; Jian Zhang; Li-ying Wu

doi:10.1117/12.688767

6 October 2006 Numerical modeling for liquid crystal optical phased array and its phase delay characteristic

Lin Xu, Jian Zhang, Li-ying Wu

Proceedings Volume 6352, Optoelectronic Materials and Devices; 635225 (2006) https://doi.org/10.1117/12.688767
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

A practical numerical model for liquid crystal cell is set up based on the geometry structure of liquid crystal optical phased arrays (LCOPA). Model parameters include width and space of electrodes, thickness of liquid crystal layer, alignment layers, electrodes and glass substrates, pre-tilted angles, dielectric constants, elastic constants, the refractive indexes and so on. Especially, the thickness of alignment layer is first considered to the best of our knowledge. According to electrostatic field theory and Frank-Oseen elastic continuum theory, two dimension (2D) electric potential distribution and 2D director distribution are calculated by means of the finite difference method on non-uniform grids. And the phase delay of LCOPA is derived from crystal optics. The influence of cell sizes on phase delay distribution is analyzed. The evaluation function of fringing field effect is provided. And the methods to decrease fringing field effect between electrodes are also discussed.

Citation Download Citation

Lin Xu, Jian Zhang, and Li-ying Wu "Numerical modeling for liquid crystal optical phased array and its phase delay characteristic", Proc. SPIE 6352, Optoelectronic Materials and Devices, 635225 (6 October 2006); https://doi.org/10.1117/12.688767

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available