Unidirectionally optical coupling from free space into silicon waveguide with wide flat-top angular efficiency
نویسندگان
چکیده
منابع مشابه
Unidirectionally optical coupling from free space into silicon waveguide with wide flat-top angular efficiency.
A grating coupling scheme from free-space light into silicon waveguide with a remarkable property of wide flat-top angular efficiency is proposed and theoretically investigated. The coupling structure is composed of two cascaded gratings with a proper distance between their peak angular efficiencies. A quantitative semi-analytical theory based on coupled-mode models is developed for performance...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2012
ISSN: 1094-4087
DOI: 10.1364/oe.20.018545