Journal
OPTICS EXPRESS
Volume 23, Issue 4, Pages 4206-4211Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.004206
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Funding
- National Science Centre (Poland) [DEC-2012/05/E/ST3/03281]
- ERDF [POIG.02.01.00-14-122/09-00]
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We demonstrate a photonic structure, composed of a dielectric quarter-wavelength stack topped with a transmission phase grating, designed to exhibit a significant asymmetry in the near infrared light transmission for waves propagating in opposite directions. The asymmetry, defined as the difference between the intensity transmission coefficients, reaches 0.72 +/- 0.06 for a single wavelength and exceeds 0.2 over a spectral range spanning from 700 to 850 nm for one incident polarization and 750-800 nm for both polarizations. The experimental results are consistent with the numerical model of light propagation in the structure. (C) 2015 Optical Society of America
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