Liang, GuanquanAbouraddy, AymanChristodoulides, DemetriosThomas, Edwin L.2017-01-302017-01-302016Liang, Guanquan, Abouraddy, Ayman, Christodoulides, Demetrios, et al.. "Asymmetric diffraction from two-component optical gratings made of passive and lossy materials." <i>Optics Express,</i> 24, no. 26 (2016) The Optical Society: 30164-30172. http://dx.doi.org/10.1364/OE.24.030164.https://hdl.handle.net/1911/93813Diffraction with asymmetric enhancement and suppression, and alternating contrast for symmetric diffraction orders is demonstrated from planar two-component optical gratings made of passive/lossy materials. Simulations agree well with the experimental diffraction pattern of the fabricated sample. Our fabrication approach uses simple, standard planar micro/nano lithography employing one photoresist and one dye. No 3D profiling is needed. The phenomena is due to the left-right asymmetric material distribution in the periodic grating, which gives rise to non-reciprocal light coupling for diffraction to the positive and negative orders.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehttp://dx.doi.org/10.1364/OE.24.030164