Optical waveguide crossing and method of making same

摘要

A photonic integrated circuit including: at least first and second optical waveguides, wherein the second of the optical waveguides at least partially overlies the first of the optical waveguides; and, an inkjet deposited layer forming a sufficiently smooth profile elevating the second of the optical waveguides with respect to the first of the optical waveguides where they at least partially overlie so as to at least partially mitigate losses in optical signals traversing at least one of the first and second optical waveguides otherwise due to the second optical waveguide at least partially overlying the first optical waveguide.