Photonic interconnect switches and network integrated into an optoelectronic chip
AssigneeSTMicroelectronics (Crolles 2) SAS
InventorsNicolas MICHIT, Patrick LE MAITRE
Life of this patent
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Abstract
An elementary photonic interconnect switch is integrated into an optoelectronic chip and includes four simple photonic interconnect switches. Each simple photonic interconnect switch has two optical waveguides that cross and are linked by a ring resonator having one ring. A basic photonic interconnect switch, a complex photonic interconnect switch and/or a photonic interconnect network are integrated into an optoelectronic chip and including at least two elementary photonic interconnect switches.
Claims18
A photonic circuit, comprising:
- a first elementary photonic interconnect switch and a second elementary photonic interconnect switch linked in series, wherein each elementary photonic interconnect switch comprises:
- a first simple switch, a second simple switch, a third simple switch and a fourth simple switch, wherein each simple switch comprises:
- first and second linear optical waveguides that cross to form an intersection and that respectively have first and second ends and third and fourth ends;
- and
- a redirecting photonic ring resonator, controllable with an electrical signal, that is provided with a ring forming an optical waveguide and positioned such that both the ring and the first and second optical waveguides form local optical coupling zones therebetween, which local optical coupling zones are located between both said intersection and said first end of the first optical waveguide and said third end of the second optical waveguide;
- a first optical link that links the second end of the first optical waveguide of the first simple switch to the first end of the first optical waveguide of the second simple switch, so that the first optical waveguides of the first and second simple switches are in series;
- a second optical link that links the fourth end of the second optical waveguide of the first simple switch to the first end of the second optical waveguide of the simple switch, so that the second optical waveguides of the first and third simple switches are in series;
- a third optical link that links the fourth end of the second optical waveguide of the second simple switch to the third end of the second optical waveguide of the fourth simple switch, so that the second optical waveguides of the second and fourth simple switches are in series;
- and
- a fourth optical link that links the second end of the first optical waveguide of the third simple switch to the first end of the first optical waveguide of the fourth simple switch, so that the first optical waveguides of the third and fourth simple switches are in series;
- wherein the first and third ends of the first simple switch, the third end of the second simple switch, the first end of the third simple switch, the second and fourth ends of the fourth simple switch, the second end of the second simple switch and the fourth end of the third simple switch respectively form outer input/output ends;
- optical links that link the outer ends of the fourth simple switch of the first elementary photonic interconnect switch and the outer ends of the first simple switch of the second elementary photonic interconnect switch;
- and
- optical links that link the outer ends of the second and third simple switches of the first elementary photonic interconnect switch and the outer ends of the second and third simple switches of the second elementary photonic interconnect switch.
A photonic circuit comprising an even number of elementary photonic interconnect switches, wherein each elementary photonic interconnect switch comprises:
- a first simple switch, a second simple switch, a third simple switch and a fourth simple switch, wherein each simple switch comprises:
- first and second linear optical waveguides that cross to form an intersection and that respectively have first and second ends and third and fourth ends;
- and
- a redirecting photonic ring resonator, controllable with an electrical signal, that is provided with a ring forming an optical waveguide and positioned such that both the ring and the first and second optical waveguides form local optical coupling zones therebetween, which local optical coupling zones are located between both said intersection and said first end of the first optical waveguide and said third end of the second optical waveguide;
- a first optical link that links the second end of the first optical waveguide of the first simple switch to the first end of the first optical waveguide of the second simple switch, so that the first optical waveguides of the first and second simple switches are in series;
- a second optical link that links the fourth end of the second optical waveguide of the first simple switch to the first end of the second optical waveguide of the simple switch, so that the second optical waveguides of the first and third simple switches are in series;
- a third optical link that links the fourth end of the second optical waveguide of the second simple switch to the third end of the second optical waveguide of the fourth simple switch, so that the second optical waveguides of the second and fourth simple switches are in series;
- and
- a fourth optical link that links the second end of the first optical waveguide of the third simple switch to the first end of the first optical waveguide of the fourth simple switch, so that the first optical waveguides of the third and fourth simple switches are in series;
- wherein the first and third ends of the first simple switch, the third end of the second simple switch, the first end of the third simple switch, the second and fourth ends of the fourth simple switch, the second end of the second simple switch and the fourth end of the third simple switch respectively form outer input/output ends;
- wherein the elementary photonic interconnect switches are linked in series and wherein the elementary photonic interconnect switches are subjected pairwise to different frequencies.
A photonic circuit comprising a plurality of basic photonic interconnect switches, wherein each basic photonic interconnect switch, comprises:
- a first elementary photonic interconnect switch and a second elementary photonic interconnect switch linked in series, wherein each elementary photonic interconnect switch comprises:
- a first simple switch, a second simple switch, a third simple switch and a fourth simple switch, wherein each simple switch comprises:
- first and second linear optical waveguides that cross to form an intersection and that respectively have first and second ends and third and fourth ends;
- and
- a redirecting photonic ring resonator, controllable with an electrical signal, that is provided with a ring forming an optical waveguide and positioned such that both the ring and the first and second optical waveguides form local optical coupling zones therebetween, which local optical coupling zones are located between both said intersection and said first end of the first optical waveguide and said third end of the second optical waveguide;
- a first optical link that links the second end of the first optical waveguide of the first simple switch to the first end of the first optical waveguide of the second simple switch, so that the first optical waveguides of the first and second simple switches are in series;
- a second optical link that links the fourth end of the second optical waveguide of the first simple switch to the first end of the second optical waveguide of the simple switch, so that the second optical waveguides of the first and third simple switches are in series;
- a third optical link that links the fourth end of the second optical waveguide of the second simple switch to the third end of the second optical waveguide of the fourth simple switch, so that the second optical waveguides of the second and fourth simple switches are in series;
- and
- a fourth optical link that links the second end of the first optical waveguide of the third simple switch to the first end of the first optical waveguide of the fourth simple switch, so that the first optical waveguides of the third and fourth simple switches are in series;
- wherein the first and third ends of the first simple switch, the third end of the second simple switch, the first end of the third simple switch, the second and fourth ends of the fourth simple switch, the second end of the second simple switch and the fourth end of the third simple switch respectively form outer input/output ends;
- optical links that link the outer ends of the fourth simple switch of the first elementary photonic interconnect switch and the outer ends of the first simple switch of the second elementary photonic interconnect switch;
- and
- optical links that link the outer ends of the second and third simple switches of the first elementary photonic interconnect switch and the outer ends of the second and third simple switches of the second elementary photonic interconnect switch;
- wherein the elementary photonic interconnect switches are linked in series and in which the basic photonic interconnect switches are subjected to different frequencies.
Dependencies are inferred from the claim text.