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Efficient Fiber-to-Slot-Waveguide Grating Couplers Based on a Double-Strip Waveguide
- Source :
- IEEE Photonics Technology Letters. 25:2377-2380
- Publication Year :
- 2013
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2013.
-
Abstract
- We propose and experimentally demonstrate a fiber-to-slot-waveguide grating coupler based on a double-strip waveguide, together with a double-strip-to-slot waveguide mode converter. By employing the double-strip waveguide, we improve the coupling efficiency from a fiber to the slot waveguide by ~ 1.2 dB, compared with previous grating-based two-stage schemes. In addition, the double-strip-to-slot waveguide mode converter, consisting of two S bends and a taper pair, occupies a short conversion length of only 4 μm. Parameters, including taper length and S-bend length are numerically optimized. Bandwidth and fabrication error tolerance are also analyzed. Experimental results verify the feasibility of the proposed scheme.
- Subjects :
- Fabrication
Materials science
business.industry
Bandwidth (signal processing)
Physics::Optics
Grating
Waveguide (optics)
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Slot-waveguide
Optics
Electrical and Electronic Engineering
Radiation mode
A fibers
business
Nonlinear Sciences::Pattern Formation and Solitons
Diffraction grating
Subjects
Details
- ISSN :
- 19410174 and 10411135
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- IEEE Photonics Technology Letters
- Accession number :
- edsair.doi...........3dff7e976589cd14cafa1a08d105cbf8