Optical Phase Shifter

摘要

An optical device includes first and second waveguide phase arms each having optically coupled parallel sections of waveguides, the parallel sections of each one of the waveguide phase arms being dissimilar to reduce crosstalk. The device further includes a tunable element for applying a phase shift to an optical signal traversing the first phase arm. The waveguides of the parallel sections may have dissimilar dimensions, e.g. may vary in width, thickness, or both. The waveguides adjacent the tunable element may be suspended and/or underetched to improve thermal isolation and accordingly reduce power consumption of the optical device.

主权项

1. An optical device comprising:
first and second waveguide phase arms each having optically coupled parallel sections of waveguides, the parallel sections of each one of the first and second waveguide phase arms being dissimilar to lessen crosstalk; and a tunable element for applying a phase shift to an optical signal traversing the first waveguide phase arm.