Back to results
US 2011/0026879 A1Published application
Fabrication-tolerant waveguides and resonators
AssigneeMassachusetts Institute of Technology
InventorsMilos Popovic, Tymon Barwicz
Life of this patent
Estimating the term…
Abstract
An optical waveguide having a core region with a substantially rectangular cross-section with a selected aspect ratio of width to height. Embodiments include devices incorporating the optical waveguide and methods for using the optical waveguide.
Claims13
A method of propagating optical signals through a waveguide with low loss and low device sensitivity to fabrication imperfections, the method including the steps of:
- providing an optical waveguide comprising a core region including a core material and having a substantially rectangular cross-section with an aspect ratio of width to height of about 1.8:1, the cross-section supporting at least two TE modes and only one TM mode, and the optical waveguide having at least one TE mode with a higher effective index than the TM mode;
- and
- propagating light in the optical waveguide solely in the TM mode.
A method of propagating optical signals through a waveguide with low loss and low device sensitivity to fabrication imperfections, the method including the steps of:
- providing an optical waveguide having a cross-section with an aspect ratio of width to height of about 1.8:1, the cross-section supporting at least two TE modes and only one TM mode, and the optical waveguide having at least one TE mode with a higher effective index than the TM mode;
- and
- propagating light in the optical waveguide solely in the TM mode.
Dependencies are inferred from the claim text.