System and method for photonic switching
First Claim
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1. A photonic switching fabric comprising:
- a first label detector configured to read a first optical label to produce a first detected label, wherein the first optical label corresponds to a first optical packet, and wherein the first optical label is in a control waveband;
a switch controller configured to adjust a photonic switch in accordance with the first detected label, and configured to generate a contention signal in accordance with the first detected label;
the photonic switch, configured to switch the first optical packet, wherein the first optical packet is in a payload waveband; and
a contention pulse unit coupled to the photonic switch, and configured to generate a contention pulse in accordance with the contention signal, wherein the contention pulse is in the control waveband.
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Abstract
In one embodiment, a photonic switching fabric includes a first label detector configured to read a first optical label to produce a first detected label, where the first optical label corresponds to a first optical packet, and where the first optical label is in a control waveband and a switch controller configured to adjust a photonic switch in accordance with the first detected label. The photonic switching fabric also includes the photonic switch, configured to switch the first optical packet, where the first optical packet is in a payload waveband.
24 Citations
20 Claims
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1. A photonic switching fabric comprising:
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a first label detector configured to read a first optical label to produce a first detected label, wherein the first optical label corresponds to a first optical packet, and wherein the first optical label is in a control waveband; a switch controller configured to adjust a photonic switch in accordance with the first detected label, and configured to generate a contention signal in accordance with the first detected label; the photonic switch, configured to switch the first optical packet, wherein the first optical packet is in a payload waveband; and a contention pulse unit coupled to the photonic switch, and configured to generate a contention pulse in accordance with the contention signal, wherein the contention pulse is in the control waveband. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of photonic packet switching, the method comprising:
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receiving, by an optically-bufferless photonic switching fabric from a first top-of-rack (TOR) switch, a first optical label corresponding to a first optical packet to be transmitted by the first TOR switch, wherein the first optical label is in a control waveband; determining whether the first TOR switch has permission to transmit the first optical packet to produce a first contention signal in accordance with the first optical label; transmitting, by the optically-bufferless photonic switching fabric to the first TOR switch, a first contention pulse in accordance with the first contention signal, wherein the first contention pulse is in the control waveband; and receiving, by the optically-bufferless photonic switching fabric from the first TOR switch, the first optical packet when the first TOR switch has permission to transmit the first optical packet, wherein the first optical packet is in a payload waveband. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of coordinating photonic packets, the method comprising:
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transmitting, by a top-of-rack (TOR) switch to an optically-bufferless photonic switching fabric, an optical label comprising an address of an optical packet, wherein the optical label is in a control waveband; receiving, by the TOR switch from the optically-bufferless photonic switching fabric, a contention pulse generated in accordance with whether the TOR switch has permission to transmit the optical packet based on the optical label, wherein the first contention pulse is in the control waveband; determining a transmission approval in accordance with the contention pulse; and transmitting, by the TOR switch to the optically-bufferless photonic switching fabric, the optical packet in accordance with the transmission approval, wherein the optical packet is in a payload waveband. - View Dependent Claims (20)
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Specification