Patent ID: 6987919
Filing Date: 2006-01-17
Classification: G02B

Abstract:
1. An optical device for transforming a waveguide mode from a first mode shape to a second mode shape, the device comprising: a single-mode waveguide comprising a guiding layer comprising a single material, the guiding layer configured to support a single optical mode at one end of the guiding layer and configured to support a single optical mode at an opposing end of the guiding layer, the guiding layer having a first width at an end of the guiding layer and a relatively lesser second width at an opposing end of the guiding layer for transforming a horizontal portion of the waveguide mode, the guiding layer comprising a lower guiding portion comprising the single material and having a first taper in width of the lower guiding portion and an upper guiding portion comprising the single material and having a second taper in width of the upper guiding portion, the upper guiding portion disposed on the lower guiding portion.