Heterogeneous waveguides and methods of manufacture
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United States of America Patent
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Oct 30, 2018
Grant Date -
Feb 1, 2018
app pub date -
Feb 11, 2016
filing date -
Feb 11, 2015
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Abstract
A heterogeneous waveguide is configured to achieve a nonlinear optical interaction, the waveguide including at least two materials in cross-section. The first material may or may not be poled or patterned and generally has a nonlinear optical property for generating at least one new frequency by mixing two of a plurality of input optical waves, and at least one of the other (second) materials is patterned for defining a waveguide mode in the cross-section, and for achieving phase-matched interactions of the waves along the propagation direction. Alternatively, the second material may be employed in increasing the modal confinement and improving efficiency. The optical modes are distributed between the two or more materials (e.g., in a hybrid mode). Implementations described also include methods of fabricating the heterogeneous waveguide.
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