CPC G02B 6/4206 (2013.01) [G02B 6/12004 (2013.01); G02B 6/122 (2013.01); G02B 6/14 (2013.01); G02B 6/26 (2013.01); G02B 6/2804 (2013.01); H01S 5/026 (2013.01); H01S 5/3013 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12097 (2013.01); G02B 2006/12147 (2013.01); G02B 6/1223 (2013.01); G02B 6/1228 (2013.01)] | 20 Claims |
1. An optical device comprising:
a first waveguide region having a core comprising a first material, the first material is crystalline silicon;
a second waveguide region having a core comprising a second material, wherein:
the first material and the second material are crystalline structures;
the second material is different than the first material;
the second material is an epitaxial structure having a direct bandgap comprising two or more elements; and
the second waveguide region is spatially separated from the first waveguide region by a separation region; and
a connecting waveguide disposed in the separation region, wherein:
the connecting waveguide comprises a core and a cladding;
the core of the connecting waveguide is end coupled with the core of the first waveguide region; and
the core of the connecting waveguide is end coupled with the core of the second waveguide region.
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