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Sub-wavelength grating components for silicon-on-insulator platform
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Yun |
| Copyright Year | 2016 |
| Abstract | This dissertation is a theoretical and experimental study of sub-wavelength grating (SWG) based photonic devices for the silicon-on-insulator (SOI) platform, including high-efficiency sub-wavelength grating couplers (SWGCs), broadband SWGCs, broadband SWG directional couplers, and an SWG polarization splitter-rotator. High-efficiency SWGCs with improved operating bandwidths and suppressed back reflections have been demonstrated to couple light into and out of SOI based photonic integrated circuits (PICs). One-dimensional SWGs have been proposed and experimentally demonstrated for the first time to make fully-etched grating couplers, which have performances comparable to the state-of-the-art fully-etched grating couplers, but with better fabrication tolerance, reduced fabrication complexity, and less cost. A theoretical study of the operating bandwidths for grating couplers has been presented and a design methodology has been demonstrated for designing SWGCs with design-intent operating bandwidths. SWGCs with 1-dB bandwidths up to 90 nm have been demonstrated, which have improved the operating bandwidth of fully-etched grating couplers by a factor of 3. Such broadband SWGCs are essential components for applications such as wavelength-division multiplexing (WDM) PICs and bio-sensing. Compact directional couplers, with dimensions about 10 times smaller |
| File Format | PDF HTM / HTML |
| DOI | 10.14288/1.0340496 |
| Alternate Webpage(s) | https://open.library.ubc.ca/media/download/pdf/24/1.0340496/3 |
| Alternate Webpage(s) | https://doi.org/10.14288/1.0340496 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
