期刊
APPLIED OPTICS
卷 57, 期 31, 页码 9223-9229出版社
OPTICAL SOC AMER
DOI: 10.1364/AO.57.009223
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资金
- Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) [AFB-170002, 1151022, 160012]
- European Southern Observatory (ESO) (ESO-Chile Joint Committee)
Implementation of antireflection layers using structured materials is of common use in millimeter- and sub-millimeter-wave refractive optic systems. In this work we have systematically studied the effect of such structures in the optical propagation with special emphasis on the cross polarization they introduce. We have performed extensive simulations and experimental verification of several commonly used structures: concentric grooves, parallel grooves, an array of boxes, an array of cylinders, and rectangular- versus triangular-shaped grooves. As a result, we propose optimal structures for demanding applications in terms of polarization and return losses over large fractional bandwidths. (C) 2018 Optical Society of America
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