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Integrated Lens for Focusing Waveguide Grating Couplers
Inventors
Prof. TSANG Hon Ki
Department
Department of Electronic Engineering
Key Problem and Market Opportunity
- New multimode waveguide grating couplers require relatively long (millimeter scale) waveguide tapers which if they use conventional linear adiabatic taper to expand the waveguide width from ~ 1 micron to the ~50 micron width for matching the diameter of industry standard multimode fibers
- Long tapers occupy expensive chip real estate
- This invention can substantially reduce the length of tapers for multimode waveguide grating couplers (See P-2019-0886 “Multimode Waveguide Grating Couplers”)
Key Advantages of the Technology
- Enables over 50 times size reduction compared with conventional linear taper
- Enables cost effective implementation of multimode waveguide grating couplers
Potential Applications
- Optical Transceivers
- High capacity communications using mode division multiplexing in multimode fibers
Integrated Lens for Focusing Waveguide Grating Couplers
Inventors
Prof. TSANG Hon Ki
Department
Department of Electronic Engineering
Key Problem and Market Opportunity
- New multimode waveguide grating couplers require relatively long (millimeter scale) waveguide tapers which if they use conventional linear adiabatic taper to expand the waveguide width from ~ 1 micron to the ~50 micron width for matching the diameter of industry standard multimode fibers
- Long tapers occupy expensive chip real estate
- This invention can substantially reduce the length of tapers for multimode waveguide grating couplers (See P-2019-0886 “Multimode Waveguide Grating Couplers”)
Key Advantages of the Technology
- Enables over 50 times size reduction compared with conventional linear taper
- Enables cost effective implementation of multimode waveguide grating couplers
Potential Applications
- Optical Transceivers
- High capacity communications using mode division multiplexing in multimode fibers
Photos
Photograph of the integrated Mikaelian lens with a multimode waveguide grating coupler
Categories
Information and Communications Technology
CUHK Tech ID
P-2020-0943
Patents
US15/930831
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