US 12,407,439 B2
Subcarrier based data center network architecture
Stuart Elby, Chester, NJ (US); and David F. Welch, Atherton, CA (US)
Assigned to Infinera Corporation, San Jose, CA (US)
Filed by Stuart Elby, Chester, NJ (US); and David F. Welch, Atherton, CA (US)
Filed on Nov. 21, 2023, as Appl. No. 18/516,909.
Application 18/516,909 is a continuation of application No. 17/403,840, filed on Aug. 16, 2021, granted, now 11,824,632.
Prior Publication US 2024/0283558 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04J 14/02 (2006.01); H04B 10/50 (2013.01); H04B 10/61 (2013.01)
CPC H04J 14/0298 (2013.01) [H04B 10/506 (2013.01); H04B 10/61 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a Tier 1 switch that supplies a plurality of data channels;
a first transceiver including a transmitter that receives the plurality of data channels, the transmitter including:
a laser, and
an optical modulator that receives a plurality of radio frequency (RF) signals associated with the plurality of data channels, such that the optical modulator supplies a plurality of optical subcarriers by modulating an output of the laser, each of which being associated with a respective one of the plurality of data channels;
an optical platform, including one of an optical demultiplexer or a splitter, that receives the plurality of optical subcarriers, the optical platform having a plurality of outputs, each of which supplying at least one of the plurality of subcarriers;
a second transceiver that includes a first receiver coupled to a first output of the optical platform, the first receiver being operable to receive the plurality of optical subcarriers and supply a group of data channels of the plurality data channels based on a group of the plurality of optical subcarriers;
a third transceiver that includes a second receiver coupled to a second output of the optical platform, the second receiver being operable to receive the plurality of optical subcarriers and supply one data channel of the plurality of data channels based on one of the plurality of optical subcarriers; and
a plurality of servers, a first one of the plurality of servers being operable to receive at least one of the group of data channels from the first receiver and a second one of the plurality of servers being operable to receive said one of the plurality of data channels from the second receiver.
 
12. A system, comprising:
a plurality of servers, each of which supplying a corresponding one of a plurality of data channels;
a plurality of first transceivers, each of which including a respective one of a plurality of transmitters, each of which receiving a corresponding one of the plurality of data channels, each of the plurality of transmitters providing a respective one of a plurality of optical carriers, each of the plurality of optical carriers being modulated in accordance with a respective one of a plurality of radio frequency (RF) signals, each RF signal being based on a respective one of the plurality of data channels;
an optical platform operable to combine the plurality of optical carriers into a composite carrier signal having a center frequency, the optical platform also being operable to supply the composite carrier signal onto an optical fiber;
a second transceiver including a receiver that receives the composite carrier signal, the receiver including a local oscillator, such that based on the composite optical signal and an output of the local oscillator, the receiver supplies the plurality of data channels; and
a Tier 1 switch that receives the plurality of data channels.