Optical interconnector, optoelectronic chip system, and optical signal sharing method

Patent metadata

Field	Value
Publication number	US-9829635-B2
Application number	US-201615277931-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Mar 28, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

An optical interconnector ( 915 ) includes: a first vertical coupled cavity ( 100 ), a first optical waveguide ( 102 ), and a second optical waveguide ( 103 ). The first vertical coupled cavity ( 100 ) includes N identical micro-resonant cavities that are equidistantly stacked, where a center of each micro-resonant cavity is located on a first straight line that is perpendicular to a plane on which the micro-resonant cavity is located, the first optical waveguide ( 102 ) and a first micro-resonant cavity ( 11 ) are in a same plane, the second optical waveguide ( 103 ) and a second micro-resonant cavity ( 13 ) are in a same plane, the first optical waveguide ( 102 ) is an input optical waveguide, the second optical waveguide ( 103 ) is a first output optical waveguide, and an optical signal having a first resonant wavelength in the first optical waveguide ( 102 ) enters the second optical waveguide ( 103 ) through the first vertical coupled cavity ( 100 ).

First claim

What is claimed is:

1. An optical interconnector comprising:
a first vertical coupled cavity;
a first optical waveguide; and
a second optical waveguide, wherein
the first vertical coupled cavity comprises N identical micro-resonant cavities, centers of the N identical micro-resonant cavities are located on a first straight line, the first straight line is perpendicular to a plane on which each micro-resonant cavity of the N identical micro-resonant cavities is located, and each two adjacent micro-resonant cavities in the N identical micro-resonant cavities are spaced by a same distance, wherein N is an odd number that is greater than or equal to 3; and
the first optical waveguide and a first micro-resonant cavity in the N identical micro-resonant cavities are in a same plane, the second optical waveguide and a second micro-resonant cavity in the N identical micro-resonant cavities are in a same plane, the first optical waveguide is an input optical waveguide of the first vertical coupled cavity, the second optical waveguide is a first output optical waveguide of the first vertical coupled cavity, and an optical signal having a first resonant wavelength in the first optical waveguide enters the second optical waveguide through the first vertical coupled cavity;

wherein N is equal to 3, and the first vertical coupled cavity comprises a first outer layer micro-resonant cavity, a second outer layer micro-resonant cavity, and a middle layer micro-resonant cavity;
wherein the first micro-resonant cavity is the first outer layer micro-resonant cavity and the second micro-resonant cavity is the second outer layer micro-resonant cavity; or the first micro-resonant cavity is the middle layer micro-resonant cavity and the second micro-resonant cavity is the first outer layer micro-resonant cavity or the second outer layer micro-resonant cavity.

2. The optical interconnector according to claim 1 , wherein the optical interconnector further comprises
a third optical waveguide, wherein the third optical waveguide and a third micro-resonant cavity in the N identical micro-resonant cavities are in a same plane, the third optical waveguide is a second output optical waveguide of the first vertical coupled cavity, and wherein an optical signal having a second resonant wavelength in the first optical waveguide enters the third optical waveguide through the first vertical coupled cavity.

3. The optical interconnector according to claim 1 , wherein an optical signal having a second resonant wavelength in the first optical waveguide enters the second optical waveguide through the first vertical coupled cavity.

4. The optical interconnector according to claim 1 , wherein the optical interconnector further comprises positive and negative electrodes, wherein the first vertical coupled cavity is disposed between the positive and negative electrodes, and the positive and negative electrodes are configured to adjust a refractive index of the first vertical coupled cavity.

5. The optical interconnector according to claim 1 , wherein the optical interconnector further comprises two piezoelectric ceramics, wherein the first vertical coupled cavity is disposed between the two piezoelectric ceramics, and the two piezoelectric ceramics are configured to adjust the distance between each two adjacent micro-resonant cavities in the first vertical coupled cavity.

6. The optical interconnector according to claim 1 , wherein the optical interconnector further comprises a first wavelength converter, wherein the first wavelength converter is disposed at an input end of the first optical waveguide, and the first wavelength converter is configured to adjust a wavelength of an optical signal input by the first optical waveguide.

7. The optical interconnector according to claim 1 , wherein the optical interconnector further comprises a second wavelength converter, wherein the second wavelength converter is disposed at an output end of the second optical waveguide, and the second wavelength converter is configured to adjust a wavelength of an optical signal output by the second optical waveguide.

8. The optical interconnector according to claim 1 , wherein a shape of each of the N identical micro-resonant cavities is one of the following:
a circle, an ellipse, and a regular polygon.

9. The optical interconnector according to claim 1 , wherein a distance between the first optical waveguide and the first micro-resonant cavity is 1 nm to 1000 nm, and a distance between the second optical waveguide and the second micro-resonant cavity is 1 nm to 1000 nm.

10. The optical interconnector according to claim 1 , wherein the distance between each two adjacent micro-resonant cavities in the N identical micro-resonant cavities are 1 nm to 1000 nm.

11. The optical interconnector according to claim 1 , wherein the optical interconnector further comprises a second vertical coupled cavity and a fourth optical waveguide, wherein
the second vertical coupled cavity comprises M identical micro-resonant cavities, centers of the M identical micro-resonant cavities are located on a second straight line, the second straight line is perpendicular to a plane on which each micro-resonant cavity of the M identical micro-resonant cavities is located, and each two adjacent micro-resonant cavities in the M identical micro-resonant cavities are spaced by a same distance, wherein M is an odd number that is greater than or equal to 3; and
the fourth optical waveguide and a fourth micro-resonant cavity in the M identical micro-resonant cavities are in a same plane, the first optical waveguide or the second optical waveguide is an input optical waveguide of the second vertical coupled cavity, and the fourth optical waveguide is an output optical waveguide of the second vertical coupled cavity.

12. An optoelectronic chip system comprising:
an optical circuit layer the optical circuit layer comprises a laser, a modulator, a multi-layer switching optical circuit, and a detector, wherein the multi-layer switching optical circuit comprises a optical interconnector, wherein the optical interconnector comprises
a first vertical coupled cavity;
a first optical waveguide; and
a second optical waveguide, wherein
the first vertical coupled cavity comprises N identical micro-resonant cavities, centers of the N identical micro-resonant cavities are located on a first straight line, the first straight line is perpendicular to a plane on which each micro-resonant cavity of the N identical micro-resonant cavities is located, and each two adjacent micro-resonant cavities in the N identical micro-resonant cavities are spaced by a same distance, wherein N is an odd number that is greater than or equal to 3; and
the first optical waveguide and a first micro-resonant cavity in the N identical micro-resonant cavities are in a same plane, the second optical waveguide and a second micro-resonant cavity in the N identical micro-resonant cavities are in a same plane, the first optical waveguide is an input optical waveguide of the first vertical coupled cavity, the second optical waveguide is a first output optical waveguide of the first vertical coupled cavity, and an optical signal having a first resonant wavelength in the first optical waveguide enters the second optical waveguide through the first vertical coupled cavity; and
a circuit layer, wherein the circuit layer comprises an encoder, a controller, and a processor, wherein

the laser is configured to input a first optical signal for the modulator;
the encoder is configured to input an electrical signal for the modulator;
the modulator modulates the first optical signal and the electrical signal into a second opt

Assignees

• Huawei Tech Co Ltd

Inventors

• Tu Xin
• Fu Hongyan
• Zhao Fei

Classifications

• G02B6/29395

  configurable, e.g. tunable or reconfigurable (switching G02B6/35) · CPC title

• G02B6/12002

  Three-dimensional structures · CPC title

• G02B2006/12142

  Modulator · CPC title

• G02B6/125

  Bends, branchings or intersections · CPC title

• G02B6/12007

  forming wavelength selective elements, e.g. multiplexer, demultiplexer · CPC title