Accurate modeling of a high-resolution, liquid-crystal-based, optical phased array (OPA) is demonstrated. The modeling method is extendable to cases where the array element size is close to the wavelength of light. This is accomplished through calculating an equilibrium liquid-crystal (LC) director field that takes into account the fringing electric fields in LC OPAs with small array elements and by calculating the light transmission with a finite-difference time-domain method that has been extended for use in birefringent materials. The diffraction efficiency for a test device is calculated and compared with the simulation.
© 2005 Optical Society of America
Original Manuscript: June 23, 2004
Revised Manuscript: August 11, 2004
Manuscript Accepted: August 13, 2004
Published: February 1, 2005
Xinghua Wang, Bin Wang, Philip J. Bos, James E. Anderson, John J. Pouch, and Felix A. Miranda, "Finite-difference time-domain simulation of a liquid-crystal optical phased array," J. Opt. Soc. Am. A 22, 346-354 (2005)