期刊
APPLIED OPTICS
卷 51, 期 17, 页码 3837-3846出版社
OPTICAL SOC AMER
DOI: 10.1364/AO.51.003837
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资金
- UK Engineering and Physical Sciences Research Council (EPSRC) through the Platform Grant in liquid crystal photonics
- Cambridge Integrated Knowledge Centre (CIKC) through project PASSBACK
- Cambridge Integrated Knowledge Centre (CIKC) through project PASSBACK3
- Engineering and Physical Sciences Research Council [EP/H00274X/1] Funding Source: researchfish
- EPSRC [EP/H00274X/1] Funding Source: UKRI
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. (C) 2012 Optical Society of America
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