CPC G02B 6/305 (2013.01) [G02B 6/12004 (2013.01); G02B 6/1228 (2013.01); G02B 6/14 (2013.01)] | 16 Claims |
1. An optical mode converter comprising:
a) a silicon substrate;
b) a silicon dioxide film deposited on a top surface of the silicon substrate;
c) a lithium niobate waveguide positioned on the silicon dioxide film having a slab and a rib that both taper in a direction of beam propagation through the optical mode converter; and
d) a doped silicon dioxide waveguide positioned on top of the lithium niobate waveguide and having a slab that tapers in the direction of the optical beam propagation through the optical mode converter,
wherein the optical mode converter expands an optical mode of the optical beam propagating through the optical mode converter from a first optical mode size to a second optical mode size.
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