Web1 de dez. de 2014 · High contrast grating (HCG) is an emerging element in integrated optoelectronics. Compared to the other elements, HCG has very rich properties and … Webto choose an appropriate waveguide thickness h of for example 220nm. This high efficiency grating coupler type is theoretically described in [10] and shows around 80% of coupling ef-ficiency according to simulations. Although it requires more process steps than the previous cases, it is compatible with any high index contrast photonic platform.
Fano-Like Resonance of Heat-Reconfigurable Silicon Grating …
WebAn optical diffraction grating having a superior ultra-precise non-planar surface shape desired in extremely sensitive and complex optical imaging devices (e.g. spectrometers or hyperspectral imagers) is provided. The optical diffraction grating comprises a substrate having a plurality of substantially parallel grooves, wherein each of the grooves includes … Web24 de ago. de 2015 · In this work, the authors describe a novel route to achieve a high reflectivity, wide bandwidth feedback mirror for GaN-based vertical-cavity light emitters; using air-suspended high contrast gratings in TiO 2, with SiO 2 as a sacrificial layer. The TiO 2 film deposition and the etching processes are developed to yield grating bars … slow falloff
Ultra-Compact Organic Vertical-Cavity Laser With High-Contrast …
Webbased beam steering, we recently introduced phased arrays based on high contrast gratings (HCG s), rather than mirrors. 9 11 Unlike earlier multi-layer MEMS mirrors, these grating mirrors are made of a single dielectric layer, achieving high reflectivity (~99.9%) over a broad optical bandwidth. 9,12 The HCG s single-material construction results Web1 de jul. de 2009 · High-contrast grating (HCG) has significant advantages in efficient light modulation due to the high refractive index contrast of the materials, it has been widely … WebReflective Optical Phase Modulator Based on High-Contrast Grating Mirrors. Yu Horie, Amir Arbabi, and Andrei Faraon. Author Information. Find other works by these authors. CLEO: Science and Innovations 2014. San Jose, California United States. 8–13 June 2014. ISBN: 978-1-55752-999-2. From the session. software for changing background of pictures