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Diffraction based phase compensation method for phase-only liquid crystal on silicon devices in operation.

Zhang, Z and Yang, H and Robertson, B and Redmond, M and Pivnenko, M and Collings, N and Crossland, WA and Chu, D (2012) Diffraction based phase compensation method for phase-only liquid crystal on silicon devices in operation. Appl Opt, 51. pp. 3837-3846.

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Abstract

A method to measure the optical response across the surface of a phase-only liquid crystal on silicon device using binary phase gratings is described together with a procedure to compensate its spatial optical phase variation. As a result, the residual power between zero and the minima of the first diffraction order for a binary grating can be reduced by more than 10 dB, from -15.98 dB to -26.29 dB. This phase compensation method is also shown to be useful in nonbinary cases. A reduction in the worst crosstalk by 5.32 dB can be achieved when quantized blazed gratings are used.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:51
Last Modified: 28 Jul 2014 01:08
DOI:

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