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9 March 2022 First-order enhanced coupling strength (ECS) gratings in III-V photonic waveguides
Freddie Castillo II, Maryam Dezfuli, Weida Zhang, Scott McWilliams, Ralph Johnson, Nai-Hsiang Sun, Jerome K. Butler, Gary A Evans
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Proceedings Volume PC12021, Novel In-Plane Semiconductor Lasers XXI; PC1202101 (2022) https://doi.org/10.1117/12.2609003
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
A low index layer between the boundary of a first-order grating combined with a high index cover layer provides significantly higher reflected power per unit length and reduces losses at the waveguide-grating interface compared to conventional gratings in III-V waveguides. The dependence of the peak and spectral width of the reflected power for Enhanced Coupling Strength (ECS) gratings is analyzed for two different ECS grating geometries. These properties of ECS gratings allow integration of optical components such as high-speed modulators with short horizontal cavity lasers that can operate without temperature control over wide temperature and wavelength ranges.
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Freddie Castillo II, Maryam Dezfuli, Weida Zhang, Scott McWilliams, Ralph Johnson, Nai-Hsiang Sun, Jerome K. Butler, and Gary A Evans "First-order enhanced coupling strength (ECS) gratings in III-V photonic waveguides", Proc. SPIE PC12021, Novel In-Plane Semiconductor Lasers XXI, PC1202101 (9 March 2022); https://doi.org/10.1117/12.2609003
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KEYWORDS
Waveguides
Reflectivity
Control systems
Interfaces
Modulators
Optical components
Reflectors
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