Laser to chip coupler
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United States of America Patent
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Apr 19, 2016
Grant Date -
Aug 15, 2013
app pub date -
Oct 13, 2011
filing date -
Oct 14, 2010
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Abstract
A method and an apparatus for butt-coupling an input beam incoming from a photonic device of a second optical element to a primary photonic chip at an input interface of the primary photonic chip is disclosed. The primary photonic chip comprises a coupling apparatus. The light from the input beam is butt-coupled to the coupling apparatus. The coupling apparatus comprises a plurality of more than one single mode optical paths on the primary photonic chip. The single mode optical paths are strongly coupled to each other at the input interface of the primary photonic chip. Regions of strongly coupled single mode optical paths can correspond to one or both of distinct but highly coupled waveguides or waveguides fully merged into a multi-mode section.
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