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Subwavelength Structured Optical Elements and Resonant Grating Filters
Published online by Cambridge University Press: 01 February 2011
Abstract
We developed several optical elements with subwavelength-structured surfaces. Antireflection surfaces were fabricated on a diffraction grating. A micro-retarder array realized by the form-birefringent effect has been made for an application to a polarization camera system. And we developed narrow-band reflection wavelength filters called “guided-mode resonant grating filters”. This filter bases on a coupling of guided mode and radiation mode. After describing some examples of the filters, we mention a grating structure for an optical switch with nonlinear optical material.
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- Copyright © Materials Research Society 2004