Colorless, directionless, contentionless optical network using MXN wavelength selective switches
First Claim
1. An optical node, comprising:
- a configuration, comprising;
D (D≥
1) degrees, each degree, of the D degrees, including an inbound wavelength selective switch (WSS) and an outbound WSS; and
E (E≥
1) degree expansions, each degree expansion, of the E degree expansions, including an inbound expansion WSS and an outbound expansion WSS,wherein an inbound expansion WSS included in a degree expansion of the E degree expansions includes;
an expansion input that connects to an expansion output of an outbound expansion WSS included in a degree expansion of a first other configuration of the optical node,D common inputs that connect to D drop outputs, each of a respective inbound WSS of the D degrees,D express outputs that connect to D express inputs, each of a respective outbound WSS of the D degrees,D drop outputs that connect to D common inputs, each of a respective inbound WSS of the D degrees, andat least one local drop port,wherein an outbound expansion WSS included in the degree expansion of the E degree expansions includes;
an expansion output that connects to an expansion input of an inbound expansion WSS included in a degree expansion of a second other configuration of the optical node,D common outputs that connect to D add inputs, each of a respective outbound WSS of the D degrees,D express inputs that connect to D express outputs, each of a respective inbound WSS of the D degrees,D add inputs that connect to D common outputs, each of a respective outbound WSS of the D degrees, andat least one local add port, andwherein a signal input to an inbound WSS of a given one of the D degrees can be routed, via the degree expansion of the E degree expansions, to any drop port included in the second other configuration of the optical node.
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Abstract
A first configuration of an optical node may include a set of degrees, each including an inbound wavelength selective switch (WSS) and an outbound WSS. The first configuration may include a first degree expansion including a first inbound expansion WSS and a first outbound expansion WSS. An expansion input of the first inbound expansion WSS may connect to an expansion output of a second outbound expansion WSS included in a second degree expansion of a second configuration of the optical node. An expansion output of the first outbound expansion WSS may connect to an expansion input of a second inbound expansion WSS included in the second degree expansion of the second configuration. A signal input to an inbound WSS of a given one of the set of degrees may be routed, via the first degree expansion and the second degree expansion, to any drop port included in the second configuration.
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Citations
20 Claims
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1. An optical node, comprising:
a configuration, comprising; D (D≥
1) degrees, each degree, of the D degrees, including an inbound wavelength selective switch (WSS) and an outbound WSS; andE (E≥
1) degree expansions, each degree expansion, of the E degree expansions, including an inbound expansion WSS and an outbound expansion WSS,wherein an inbound expansion WSS included in a degree expansion of the E degree expansions includes; an expansion input that connects to an expansion output of an outbound expansion WSS included in a degree expansion of a first other configuration of the optical node, D common inputs that connect to D drop outputs, each of a respective inbound WSS of the D degrees, D express outputs that connect to D express inputs, each of a respective outbound WSS of the D degrees, D drop outputs that connect to D common inputs, each of a respective inbound WSS of the D degrees, and at least one local drop port, wherein an outbound expansion WSS included in the degree expansion of the E degree expansions includes; an expansion output that connects to an expansion input of an inbound expansion WSS included in a degree expansion of a second other configuration of the optical node, D common outputs that connect to D add inputs, each of a respective outbound WSS of the D degrees, D express inputs that connect to D express outputs, each of a respective inbound WSS of the D degrees, D add inputs that connect to D common outputs, each of a respective outbound WSS of the D degrees, and at least one local add port, and wherein a signal input to an inbound WSS of a given one of the D degrees can be routed, via the degree expansion of the E degree expansions, to any drop port included in the second other configuration of the optical node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optical node, comprising:
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a first configuration, comprising; D1 (D1≥
1) degrees, each degree, of the D1 degrees, including an inbound wavelength selective switch (WSS) and an outbound WSS; anda first degree expansion including a first inbound expansion WSS and a first outbound expansion WSS, wherein the first inbound expansion WSS includes an expansion input that connects to an expansion output of a second outbound expansion WSS included in a second degree expansion of a second configuration, and wherein the first outbound expansion WSS includes an expansion output that connects to an expansion input of a second inbound expansion WSS included in the second degree expansion of the second configuration; and the second configuration, comprising; D2 (D2≥
1) degrees, each degree, of the D2 degrees, including an inbound WSS and an outbound WSS;the second degree expansion including the second expansion inbound WSS and the second expansion outbound WSS, wherein the second inbound expansion WSS includes the expansion input that connects to the expansion output of the first outbound expansion WSS, wherein the second outbound expansion WSS includes the expansion output that connects to the expansion input of the first inbound expansion WSS, wherein a signal input to an inbound WSS of a given one of the D1 degrees can be routed, via the first degree expansion and the second degree expansion, to any drop port included in the second configuration, and wherein a signal input to an inbound WSS of a given one of the D2 degrees can be routed, via the second degree expansion and the first degree expansion, to any drop port included in the first configuration. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An optical node, comprising:
a first configuration, comprising; a set of degrees, each including an inbound wavelength selective switch (WSS) and an outbound WSS; and a first degree expansion including a first inbound expansion WSS and a first outbound expansion WSS, wherein an expansion input of the first inbound expansion WSS connects to an expansion output of a second outbound expansion WSS included in a second degree expansion of a second configuration of the optical node, and wherein an expansion output of the first outbound expansion WSS connects to an expansion input of a second inbound expansion WSS included in the second degree expansion of the second configuration, wherein a signal input to an inbound WSS of a given one of the set of degrees can be routed, via the first degree expansion and the second degree expansion, to any drop port included in the second configuration, and wherein a signal input to an inbound WSS of a given one of the other set of degrees can be routed, via the second degree expansion and the first degree expansion, to any drop port included in the first configuration. - View Dependent Claims (18, 19, 20)
Specification