Optical coupler and AWG having the same
AssigneeThreeFive Photonics B.V.
InventorsCornelis Adrianus Marinus Steenbergen, Marijn Pieter Dessens
Life of this patent
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Abstract
The invention pertains to an optical coupler comprising at least one input waveguide, a coupling region, and a plurality of output waveguides. The coupling region comprises a plurality of coupled waveguides, which diverge with respect to each other in the propagation direction of electromagnetic radiation launched in the said input waveguide. In these couplers, both the amplitude distribution and a phase distribution can be accurately matched the output waveguides resulting in relatively low loss and cross-talk.
Claims23
An optical coupler comprising:
- at least one input waveguide, a coupling region optically connected to said input waveguide;
- and
- a plurality of output waveguides each optically connected to said coupling region, wherein said coupling region further comprises a plurality of coupled waveguides, which, over at least part of their lengths, diverge with respect to each other in the propagation direction of electromagnetic radiation launched in the said input waveguide, wherein at least some of the waveguides in the coupling region comprise a section having a width that is less than a predetermined critical width of the waveguide at a predetermined wavelength at which the coupler is designed to operate.
An optical coupler comprising:
- at least one input waveguide, a coupling region optically connected to said input waveguide;
- and
- a plurality of output waveguides each optically connected to said coupling region, wherein said coupling region further comprises a plurality of coupled waveguides, at least some section of said coupled waveguides having a width that is less than a predetermined critical width at a predetermined wavelength at which said optical coupler is designed to operate, said coupled waveguides over at least another part of their lengths diverging with respect to each other in the propagation direction of electromagnetic radiation launched in the said input waveguide.
An optical coupler comprising:
- at least one input waveguide, a coupling region optically connected to said input waveguide;
- and
- a plurality of output waveguides each optically connected to said coupling region, wherein said coupling region further comprises a plurality of coupled waveguides, at least some section of said coupled waveguides having a width that is less than a predetermined critical width at a predetermined wavelength at which said optical coupler is designed to operate.
Dependencies are inferred from the claim text.