Optical device for dispersion compensation

• US 9,671,673 B2
• Filed: 11/17/2014
• Issued: 06/06/2017
• Est. Priority Date: 11/17/2014
• Status: Active Grant

• Current Assignee: Singapore University Of Technology And Design
• Original Assignee: Singapore University Of Technology And Design
• Inventors: Tan, Dawn, Chen, George F. R., Donnelly, Christine, Wang, Ting
• Primary Examiner(s): Ullah, Akm Enayet
• Application Number:
  US14/542,782
• Publication Number:
  US 20160139489A1
• Time in Patent Office: 932 Days
• Field of Search: 385129-135, 385 14, 385 24- 47
• CPC Class Codes: G02B 2006/121 Channel; buried or the like
• CPC Class Codes: G02B 6/1228 Tapered waveguides, e.g. integrated spot-size transformers for coupling with fibres G02B6/305
• CPC Class Codes: G02B 6/124 Geodesic lenses or integrated gratings
• CPC Class Codes: G02B 6/125 Bends, branchings or intersections
• CPC Class Codes: G02F 1/025 in an optical waveguide structure G02F1/017, G02F1/2257 take precedence
• CPC Class Codes: G02F 1/353 Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
• CPC Class Codes: G02F 1/354 Third or higher harmonic generation
• CPC Class Codes: G02F 1/365 in an optical waveguide structure G02F1/377, G02F1/395 take precedence
• CPC Class Codes: G02F 2201/066 channel; buried
• CPC Class Codes: G02F 2201/305 diffraction grating
• CPC Class Codes: G02F 2202/105 single crystal Si

Abstract

According to embodiments of the present invention, an optical device is provided. The optical device includes a channel waveguide, and a plurality of optical elements arranged along at least a portion of the channel waveguide to interact with light propagating in the channel waveguide, wherein a period of the plurality of optical elements changes nonlinearly along the portion of the channel waveguide. According to further embodiments of the present invention, a method for forming an optical device is also provided.

Claims

1. An optical device comprising:

a plurality of channel waveguides; and

a plurality of optical elements arranged along at least a portion of each channel waveguide of the plurality of the channel waveguides to interact with light propagating in the channel waveguides, wherein a period of the plurality of optical elements changes nonlinearly along the portion of the channel waveguides;

wherein the channel waveguides are optically coupled to each other;

wherein each channel waveguide of the plurality of waveguides comprises a plurality of planar surfaces;

wherein the optical elements comprise corrugations on opposite planar surfaces of the channel waveguides;

wherein the corrugations have a sinusoidal profile.

2. The optical device as claimed in claim 1, wherein the period of the plurality of optical elements changes as a quadratic function of a distance along the portion of each channel waveguide of plurality of the channel waveguides relative to an origin of the portion of the channel waveguide.

3. A method for forming an optical device, the method comprising:

forming a plurality of channel waveguides; and

forming a plurality of optical elements along at least a portion of each channel waveguide of the plurality of the channel waveguides, the plurality of optical elements adapted to interact with light propagating in the channel waveguides, wherein a period of the plurality of optical elements changes nonlinearly along the portion of the channel waveguides;

wherein the channel waveguides are optically coupled to each other;

wherein each channel waveguide of the plurality of waveguides comprises a plurality of planar surfaces;

wherein the optical elements comprise corrugations on opposite planar surfaces of the channel waveguides;

wherein the corrugations have a sinusoidal profile.

4. The method as claimed in claim 3, wherein the period of the plurality of optical elements changes as a quadratic function of a distance along the portion of each channel waveguide of the plurality of the channel waveguides relative to an origin of the portion of the channel waveguide.