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Updated: Jul 13, 2026

Enabling High Grayscale Resolution Displays and Accurate Response Time Measurements on Conventional Computers
Published on: February 29, 2012
Design and demonstration of a switching engine for a binary true-time-delay device that uses a white cell
Richard Higgins1, Niru K Nahar, Betty Lise Anderson
1Optimer Photonics, 505 King Avenue, Columbus, Ohio 43201, USA.
Abstract:
Optical true-time-delay devices based on the White cell can be divided into two general types: polynomial cells, in which the number of delays that can be obtained is related to the number of times m that a beam bounces in the cell raised to some power, and exponential cells, in which the number of delays is proportional to some number raised to the power of m. In exponential cells, the topic to be addressed, the spatial light modulator switches between a delay element and a null path on each bounce. We describe an improved design of this switching engine, which contains a liquid-crystal switch and a White cell. We examine astigmatism and corrections for it and present a specific design.
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