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Strain, Michael
University of Strathclyde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020High-Throughput Electrical Characterization of Nanomaterials from Room to Cryogenic Temperatures.
- 2020Gallium nitride micro-light-emitting diode structured light sources for multi-modal optical wireless communications systemscitations
- 2020Gigabit per second visible light communication based on AlGaInP red micro-LED micro-transfer printed onto diamond and glasscitations
- 2020Automated nanoscale absolute accuracy alignment system for transfer printingcitations
- 2019Hyperspectral imaging under low illumination with a single photon cameracitations
- 2019Gallium nitride micro-LED drive circuits for visible light communications
- 2014Integrated microspectrometer with elliptical Bragg mirror enhanced diffraction grating on silicon on insulatorcitations
- 2012Bistable micro-ring lasers with compact footprint and high output efficiencycitations
- 2012Photo-induced trimming of chalcogenide-assisted silicon photonic circuits
- 2007Integrated chirped Bragg gratings for dispersion control
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article
Integrated microspectrometer with elliptical Bragg mirror enhanced diffraction grating on silicon on insulator
Abstract
An on-chip micro-spectrometer is demonstrated based on a circular diffraction grating consisting of an elliptical Bragg mirror. This structure results in a highly efficient and compact device with simplified processing requirements, useful for sensing, spectroscopy, telecom demultiplexing, and optical interconnects. The computed efficiency for a realistic geometry is0.14 dB, which represents to the best of our knowledge the highest predicted efficiency for concave diffraction gratings (echelle/echelette gratings). The first realization of the elliptical Bragg mirror diffraction grating spectrometer is presented on silicon on insulator at a wavelength of 1.55 µm. Measurements show a full device efficiency of3.0 dB, including all in-line losses, with a band flatness of 0.4 dB over 30 nm.