US 2019/0101699 A1Published application

Photonic interconnection switches and network integrated in an optoelectronic chip

AssigneeSTMicroelectronics (Crolles 2) SAS

InventorsNicolas MICHIT, Patrick LE MAITRE

Life of this patent

Estimating the term…

Loading patent…

Abstract

A photonic interconnection elementary switch is integrated in an optoelectronic chip/The switch includes first and second linear optical waveguides which intersect to form a first intersection. Two first photonic redirect ring resonators are respectively coupled to the first and second optical waveguides. Two second photonic redirect ring resonators are respectively coupled to the first and second optical waveguides. A third linear optical waveguide is coupled to one of the first ring resonators and one of the second ring resonators. A fourth linear optical waveguide is coupled to another of the first resonators and to another of the second ring resonators. A base switch, complex switch, and photonic interconnection network integrated in an optoelectronic chip, include at least two of the photonic interconnection elementary switches.

Claims12

Dependent claims

A photonic interconnection elementary switch integrated in an optoelectronic chip, comprising:

a first linear optical waveguide and a second linear optical waveguide which intersect forming a first intersection and which each respectively have first and second external optical coupling ends, so that the first linear optical waveguide and the second linear waveguide each have first branches between said intersection and said first ends and each have second branches between said first intersection and said second ends;
two first photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the first branches, wherein the first branches pass between the two first photonic redirect ring resonators,
two second photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the second branches, wherein the second branches pass between the two second photonic redirect ring resonators,
a third linear optical waveguide coupled in local optical coupling areas to one of the two first photonic redirect ring resonators and to one of the two second photonic redirect ring resonators which are located on a same side with respect to the first branch of the second optical waveguide and the second branch of the first optical waveguide, and
a fourth linear optical waveguide coupled in local optical coupling areas to another of the two first photonic redirect ring resonators and to another of the two second photonic redirect ring resonators located on a same side with respect to the first branch of the first optical waveguide and the second branch of the second optical waveguide;
wherein the third linear optical waveguide and the fourth optical waveguide each have first ends on the side of the two first photonic redirect ring resonators and second ends on the side of the two second photonic redirect ring resonators.

3 more elements

A photonic interconnection base switch integrated in an optoelectronic chip, comprising:

a first elementary switch and a second elementary switch, wherein each of the first and second elementary switches comprises:
a first linear optical waveguide and a second linear optical waveguide which intersect forming a first intersection and which each respectively have first and second external optical coupling ends, so that the first linear optical waveguide and the second linear waveguide each have first branches between said intersection and said first ends and each have second branches between said first intersection and said second ends;
two first photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the first branches, wherein the first branches pass between the two first photonic redirect ring resonators,
two second photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the second branches, wherein the second branches pass between the two second photonic redirect ring resonators,
a third linear optical waveguide coupled in local optical coupling areas to one of the two first photonic redirect ring resonators and to one of the two second photonic redirect ring resonators which are located on a same side with respect to the first branch of the second optical waveguide and the second branch of the first optical waveguide, and
a fourth linear optical waveguide coupled in local optical coupling areas to another of the two first photonic redirect ring resonators and to another of the two second photonic redirect ring resonators located on a same side with respect to the first branch of the first optical waveguide and the second branch of the second optical waveguide;
wherein the third linear optical waveguide and the fourth optical waveguide each have first ends on the side of the two first photonic redirect ring resonators and second ends on the side of the two second photonic redirect ring resonators;
and
wherein the linear optical waveguides of the first elementary switch are connected to the linear optical waveguides of the second elementary switch.

6 more elements

A photonic interconnection complex switch integrated in an optoelectronic chip, comprising:

an even number of elementary switches;
wherein each elementary switch comprises:
a first linear optical waveguide and a second linear optical waveguide which intersect forming a first intersection and which each respectively have first and second external optical coupling ends, so that the first linear optical waveguide and the second linear waveguide each have first branches between said intersection and said first ends and each have second branches between said first intersection and said second ends;
two first photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the first branches, wherein the first branches pass between the two first photonic redirect ring resonators,
two second photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the second branches, wherein the second branches pass between the two second photonic redirect ring resonators,
a third linear optical waveguide coupled in local optical coupling areas to one of the two first photonic redirect ring resonators and to one of the two second photonic redirect ring resonators which are located on a same side with respect to the first branch of the second optical waveguide and the second branch of the first optical waveguide, and
a fourth linear optical waveguide coupled in local optical coupling areas to another of the two first photonic redirect ring resonators and to another of the two second photonic redirect ring resonators located on a same side with respect to the first branch of the first optical waveguide and the second branch of the second optical waveguide;
wherein the third linear optical waveguide and the fourth optical waveguide each have first ends on the side of the two first photonic redirect ring resonators and second ends on the side of the two second photonic redirect ring resonators;
and
wherein the linear optical waveguides adjacent ones of the elementary switches are selectively connected in series;
and
wherein photonic redirect ring resonators of the elementary switches are subjected in pairs to different frequencies.

9 more elements

A photonic interconnection complex switch integrated in an optoelectronic chip, comprising:

a plurality of base switches;
wherein each base switch comprises:
a first elementary switch and a second elementary switch, wherein each of the first and second elementary switches comprises:
a first linear optical waveguide and a second linear optical waveguide which intersect forming a first intersection and which each respectively have first and second external optical coupling ends, so that the first linear optical waveguide and the second linear waveguide each have first branches between said intersection and said first ends and each have second branches between said first intersection and said second ends;
two first photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the first branches, wherein the first branches pass between the two first photonic redirect ring resonators,
two second photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the second branches, wherein the second branches pass between the two second photonic redirect ring resonators,
a third linear optical waveguide coupled in local optical coupling areas to one of the two first photonic redirect ring resonators and to one of the two second photonic redirect ring resonators which are located on a same side with respect to the first branch of the second optical waveguide and the second branch of the first optical waveguide, and
a fourth linear optical waveguide coupled in local optical coupling areas to another of the two first photonic redirect ring resonators and to another of the two second photonic redirect ring resonators located on a same side with respect to the first branch of the first optical waveguide and the second branch of the second optical waveguide;
wherein the third linear optical waveguide and the fourth optical waveguide each have first ends on the side of the two first photonic redirect ring resonators and second ends on the side of the two second photonic redirect ring resonators;
and
wherein the linear optical waveguides of the first elementary switch are connected to the linear optical waveguides of the second elementary switch;
and
wherein the linear optical waveguides of the adjacent elementary switches are selectively connected in series;
and
wherein photonic redirect ring resonators of the base switches are subjected to different frequencies.

12 more elements

A photonic interconnection network integrated in an optoelectronic chip, comprising:

a plurality of optoelectronic devices having waveguide input ports and output ports;
and
a base switch for interconnecting the waveguide input ports and output ports;
wherein the base switch comprises:
a first elementary switch and a second elementary switch, wherein each of the first and second elementary switches comprises:
a first linear optical waveguide and a second linear optical waveguide which intersect forming a first intersection and which each respectively have first and second external optical coupling ends, so that the first linear optical waveguide and the second linear waveguide each have first branches between said intersection and said first ends and each have second branches between said first intersection and said second ends;
two first photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the first branches, wherein the first branches pass between the two first photonic redirect ring resonators,
two second photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the second branches, wherein the second branches pass between the two second photonic redirect ring resonators,
a third linear optical waveguide coupled in local optical coupling areas to one of the two first photonic redirect ring resonators and to one of the two second photonic redirect ring resonators which are located on a same side with respect to the first branch of the second optical waveguide and the second branch of the first optical waveguide, and
a fourth linear optical waveguide coupled in local optical coupling areas to another of the two first photonic redirect ring resonators and to another of the two second photonic redirect ring resonators located on a same side with respect to the first branch of the first optical waveguide and the second branch of the second optical waveguide;
wherein the third linear optical waveguide and the fourth optical waveguide each have first ends on the side of the two first photonic redirect ring resonators and second ends on the side of the two second photonic redirect ring resonators;
and
wherein the linear optical waveguides of the first elementary switch are connected to the linear optical waveguides of the second elementary switch.

10 more elements

A photonic interconnection network integrated in an optoelectronic chip, comprising:

a plurality of optoelectronic devices having waveguide input ports and output ports;
and
a complex switch for interconnecting the waveguide input ports and output ports;
wherein the complex switch comprises:
an even number of elementary switches;
wherein each elementary switch comprises:
a first linear optical waveguide and a second linear optical waveguide which intersect forming a first intersection and which each respectively have first and second external optical coupling ends, so that the first linear optical waveguide and the second linear waveguide each have first branches between said intersection and said first ends and each have second branches between said first intersection and said second ends;
two first photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the first branches, wherein the first branches pass between the two first photonic redirect ring resonators,
two second photonic redirect ring resonators, respectively comprising a single ring, respectively coupled to the first linear optical waveguide and second optical waveguide in local optical coupling areas of the second branches, wherein the second branches pass between the two second photonic redirect ring resonators,
a third linear optical waveguide coupled in local optical coupling areas to one of the two first photonic redirect ring resonators and to one of the two second photonic redirect ring resonators which are located on a same side with respect to the first branch of the second optical waveguide and the second branch of the first optical waveguide, and
a fourth linear optical waveguide coupled in local optical coupling areas to another of the two first photonic redirect ring resonators and to another of the two second photonic redirect ring resonators located on a same side with respect to the first branch of the first optical waveguide and the second branch of the second optical waveguide;
wherein the third linear optical waveguide and the fourth optical waveguide each have first ends on the side of the two first photonic redirect ring resonators and second ends on the side of the two second photonic redirect ring resonators;
and
wherein the linear optical waveguides adjacent ones of the elementary switches are selectively connected in series;
and
wherein photonic redirect ring resonators of the elementary switches are subjected in pairs to different frequencies.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/148,535Filed 1 Oct 2018
Priority: FR 17591842 Oct 2017
Published: 4 Apr 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G02B 6/29343
Loop resonators: cascade of loop resonators
G02B 6/293
Having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals:…
G02B 6/3596
Having switching means: with planar waveguide arrangement, i.e. in a substrate, regardless if actuating mechanism is outside the substrate
H04Q 11/0005
Using optical switching: switch and router aspects