Grating-coupled silicon-on-sapphire integrated slot waveguides operating at mid-infrared wavelengths.
نویسندگان
چکیده
We demonstrate subwavelength bidirectional grating (SWG) coupled slot waveguide fabricated in silicon-on-sapphire for transverse electric polarized wave operation at 3.4 μm wavelength. Coupling efficiency of 29% for SWG coupler is experimentally achieved. Propagation loss of 11 dB/cm has been experimentally obtained for slot waveguides. Two-step taper mode converters with an insertion loss of 0.13 dB are used to gradually convert the strip waveguide mode into slot waveguide mode.
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ورودعنوان ژورنال:
- Optics letters
دوره 39 10 شماره
صفحات -
تاریخ انتشار 2014