Back to results
US 6,788,847 B2Granted
Photonic input/output port
AssigneeLuxtera, Inc.
InventorsPaul J. Paddon, Michael K. Jackson, Jeff F. Young, Selena Lam
Life of this patent
Estimating the term…
Abstract
The present I/O ports comprise (1) a layered structure comprising (a) an unpatterned superstrate having at least one layer, (b) an unpatterned substrate having at least one layer, and (c) at least one intermediate layer sandwiched between the unpatterned superstrate and the unpatterned substrate, (2) a coupling region that is within the at least one intermediate layer and that comprises an arrangement of at least one optical scattering element and (3) at least one output waveguide. The present I/O ports can be effectively used in balanced photonic circuits and unbalanced photonic circuits.
Claims19
A photonic input/output port, comprising:
- (a) a layered structure comprising an unpatterned superstrate having at least one layer, an unpatterned substrate having at least one layer and at least one intermediate layer sandwiched between the unpatterned superstrate and the unpatterned substrate,
- (b) a coupling region that is within the at least one intermediate layer and that comprises an arrangement of at least one optical scattering element, and
- (c) at least one output waveguide,
- wherein the at least one optical scattering element has an index contrast that is greater than or equal to approximately 1.
1 more element
A balanced photonic circuit, comprising:
- (a) a first photonic input/output port and a second photonic input/output port, each input/output port comprising:
- i. a layered structure comprising an unpatterned superstrate having at least one layer, an unpatterned substrate having at least one layer and at least one intermediate layer sandwiched between the unpatterned superstrate and the unpatterned substrate, and
- ii. a coupling region that is within the at least one intermediate layer and that comprises an arrangement of at least one optical scattering element,
- wherein the at least one optical scattering element has an index contrast that is greater than or equal to approximately 1,
- (b) a first output waveguide,
- (c) a second output waveguide,
- (d) a third output waveguide,
- (e) a fourth output waveguide,
- (f) a first optical element, and
- (g) a second optical element,
- wherein the first output waveguide connects the first input/output port to the first optical element, the second output waveguide connects the first input/output port to the second optical element, the third output waveguide connects the first optical element to the second input/output port, the fourth output waveguide connects the second optical element to the second input/output port and the first and second optical elements are at least substantially identical.
8 more elements
An unbalanced photonic circuit, comprising:
- (a) a first photonic input/output port, comprising:
- i. a layered structure comprising an unpatterned superstrate having at least one layer, an unpatterned substrate having at least one layer and at least one intermediate layer sandwiched between the unpatterned superstrate and the unpatterned substrate, and
- ii. a coupling region that is within the at least one intermediate layer and that comprises an arrangement of at least one optical scattering element,
- wherein the at least one optical scattering element has an index contrast that is greater than or equal to approximately 1,
- (b) a second photonic input/output port, comprising:
- i. a layered structure comprising an unpatterned superstrate having at least one layer, an unpatterned substrate having at least one layer and at least one intermediate layer sandwiched between the unpatterned superstrate and the unpatterned substrate, and
- ii. a coupling region that is within the at least one intermediate layer and that comprises an arrangement of at least one optical scattering element,
- wherein the at least one optical scattering element has an index contrast that is greater than or equal to approximately 1,
- (c) a first output waveguide,
- (d) a second output waveguide,
- (e) a third output waveguide,
- (f) a fourth output waveguide,
- (g) a fifth output waveguide,
- (h) a first optical element,
- (i) a second optical element, and
- (j) an optical combiner,
- wherein the first output waveguide connects the first input/output port to the first optical element, the second output waveguide connects the first input/output port to the second optical element, the third output waveguide connects the first optical element to the optical combiner, the fourth output waveguide connects the second optical element to the optical combiner and the fifth output waveguide connects the optical combiner to the second input/output port.
14 more elements
Dependencies are inferred from the claim text.