High-efficiency single-order waveguide grating coupler.
نویسندگان
چکیده
High-efficiency single-order grating coupling between an optical waveguided mode and a volume wave is achieved by means of a double-sided corrugated cover film that has phase-shifted undulations. A greater than 90% outcoupling ratio into air is demonstrated for weakly guiding ion-exchanged waveguides. The conditions for efficient coupling and the tolerances on them are established.
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ورودعنوان ژورنال:
- Optics letters
دوره 15 24 شماره
صفحات -
تاریخ انتشار 1990