Abstract: An optical bypass system for interconnecting a plurality of data centers with a regional hub networking node includes an optical switching layer configured to receive a plurality of channels from each of the plurality of data centers, and to switch the plurality of channels from each of the plurality of data centers (1) between one another for optical bypass and (2) to an electrical switching fabric at the regional hub networking node; and a controller configured to (1) configure wavelengths on corresponding optical transceivers for each of the plurality of channels from each of the plurality of data centers, (2) configure wavelength switching in the optical switching layer, and (3) determine packet forwarding between the corresponding optical transceivers.

Abstract: A method of modeling an optical system includes obtaining input data for a channel in an optical system that includes a transmitter, one or more spans, and a receiver; processing the input data with a transmitter sub-model, output data from the transmitter sub-model with one or more span sub-models, and output data from one or more span sub-models with a receiver sub-model; and providing output data for the channel based on the processing. The method can also include, prior to the receiving, training an optical system model for the optical system; and decomposing the optical system model into the transmitter sub-model, the one or more span sub-models, and the receiver sub-model.

Abstract: A satellite includes a plurality of transceivers, each configured to selectively connect to one of another transceiver in another satellite and a ground station; and configurable pass-through between the plurality of transceivers that is configured based on a location of the satellite in a constellation. The configurable pass-through can provide data signal pass-through without one or more of full decoding, regeneration, and error correction, thereby saving power.

Abstract: A Photonic Integrated Circuit (PIC) includes N Ring and Disk type Microstructures (RDMs), N is an integer and greater than 1; at least one spare RDM, wherein each RDM operates spectrally in a periodic nature and has its spectral operation vary by temperature; and circuitry configured to handoff any of the N RDMs and the at least one spare RDM for spectral operation based on a current temperature. For the handoff, the at least one spare RDM is unlocked spectrally and is tuned and locked to a frequency of interest of a current RDM based on the temperature, and the current RDM is unlocked.

Abstract: Aspects of the subject disclosure may include, for example, obtaining an estimate of a phase of a reference associated with a signal received over an optical channel, obtaining an estimate of a frequency of a carrier associated with the signal, and based on the estimate of the phase of the reference and the estimate of the frequency of the carrier, estimating a location dependent property associated with a disturbance to the optical channel to determine a location estimate for the disturbance. Other embodiments are disclosed.

Abstract: Systems and methods include an optical transceiver configured to connect to a fiber cable having a plurality of fiber cores, the optical transceiver including a plurality of transmitters, and a plurality of receivers, wherein the transmitters connect to a first set of the fiber cores in the fiber cable and the receivers connect to a second set of the fiber cores of the fiber cable. The optical transceiver including an array composed of the elements where each element consists of a ?LED and a Photodetector connected to a programmable wire such that a training algorithm selects which wires become active in the data path. Associated circuitry such as drivers for ?LEDs and TIAs for PDs are also part of each element.

Abstract: Systems and methods include obtaining input data related to a networking system; modeling operation of the networking system via a composite model that includes a plurality of sub-models that collectively form the composite model, wherein at least one sub-model is a behavioral sub-model and at least one sub-model is a machine learning model, wherein various data in the input data is provided to corresponding sub-models, and wherein each sub-model is configured to model one or more components in the networking system; and providing output data based on the modeling.

Abstract: A hollow core fiber (HCF) link is characterized by structural properties selected to support and sustain light propagation in a fundamental mode and in at least one higher-order mode. Connected to a proximal end of the HCF link, there is a mode coupler configured to couple a data signal into the fundamental mode and to couple an obfuscating signal into the at least one higher-order mode for simultaneous propagation of the data signal and the obfuscating signal on the HCF link, where the obfuscating signal substantially overlaps the data signal in spectral content. At a distal end of the HCF link, there is a mode splitter configured to split a first optical signal detected in the fundamental mode from a second optical signal detected in the at least one higher-order mode.

Abstract: Aspects of the subject disclosure may include, for example, receiving one or more blocks of data for transmission to a destination, splitting the one or more blocks of data into a plurality of data shards, and communicating the plurality of data shards to the destination, wherein the communicating comprises providing a respective data shard of the plurality of data shards to a respective physical path of a plurality of physical paths to increase data security during the communicating. Other embodiments are disclosed.

Abstract: An imaging fiber bundle includes a first end and a second end; and N photonic lantems, N>1, wherein the N photonic lanterns are disposed between and aligned to the first end and the second end. Each of the N photonic lantems includes first M multimode cores, at the first end, that extend to S single-mode cores, where M and S are integers, andM<S, and second M multimode cores that, at the second end, that extend from the S single-mode cores.

Abstract: Systems and methods for Doppler frequency shift compensation in free space optical links include a modulator configured to modulate a transmitter laser; a receiver including a Local Oscillator (LO) laser configured to receive a coherent signal; and circuitry configured to tune a frequency of the transmitter laser and the LO laser based on an amount of Doppler frequency shift to be compensated. The systems and methods determine an amount of Doppler shift between a first and second satellite and tune the frequency of the transmitter and LO laser based on the determined amount of Doppler frequency shift.

Abstract: A method of configuring an express mesh satellite network includes monitoring a plurality of satellites in a constellation, wherein each of the plurality of satellites includes a plurality of coherent optical modems; determining a topology of the constellation based on (1) ground traffic sources and sinks and (2) locations of any of the plurality of satellites; and causing the any of the plurality of satellites and their corresponding plurality of coherent optical modems to perform one or more of a relay function and a ground link, with corresponding coherent optical modems of the plurality of coherent optical, and based on the topology.

Abstract: A hollow core fiber (HCF) link is characterized by structural properties selected to support and sustain light propagation in a fundamental mode and in at least one higher-order mode. Connected to a proximal end of the HCF link, there is a mode coupler configured to couple a data signal into the fundamental mode and to couple an obfuscating signal into the at least one higher-order mode for simultaneous propagation of the data signal and the obfuscating signal on the HCF link, where the obfuscating signal substantially overlaps the data signal in spectral content. At a distal end of the HCF link, there is a mode splitter configured to split a first optical signal detected in the fundamental mode from a second optical signal detected in the at least one higher-order mode.

Abstract: An electrical circuit package includes an electrical processing engine (10) circuit configured to perform data processing; and one or more co-packaged coherent optical Input/Output (IO) modules (20) interconnected to the electrical processing engine (10) circuit, wherein the electrical processing engine (10) circuit is configured to interface electrical data including an optical signal waveform representation to each of the one or more co-packaged coherent optical IO modules, and wherein the one or more co-packaged coherent optical IO modules (20) are configured to coherently transmit and receive optical data based on the optical signal waveform representation. The electrical processing engine (10) circuit can be configured to perform optical modulation and demodulation based on the optical signal waveform representation, in addition to the data processing.

Abstract: A hollow core fiber (HCF) link is characterized by structural properties selected to support and sustain light propagation in a fundamental mode and in at least one higher-order mode. Connected to a proximal end of the HCF link, there is a mode coupler configured to couple a data signal into the fundamental mode and to couple an obfuscating signal into the at least one higher-order mode for simultaneous propagation of the data signal and the obfuscating signal on the HCF link, where the obfuscating signal substantially overlaps the data signal in spectral content. At a distal end of the HCF link, there is a mode splitter configured to split a first optical signal detected in the fundamental mode from a second optical signal detected in the at least one higher-order mode.

Abstract: An express mesh satellite network includes a plurality of satellites arranged in a constellation, each including a plurality of coherent optical modems, wherein the plurality of satellites are configured in a topology based on traffic sources and sinks on the ground where the topology includes express links where satellites are directly connected in space by the coherent optical modems based on the traffic sources and sinks. The plurality of satellites are configured to become a node in the topology when in an associated affinity area having a ground link or requiring a relay function.

Abstract: A satellite includes a plurality of transceivers, each configured to selectively connect to one of another transceiver in another satellite and a ground station; and configurable pass-through between the plurality of transceivers that is configured based on a location of the satellite in a constellation. The configurable pass-through can provide data signal pass-through without one or more of full decoding, regeneration, and error correction, thereby saving power.

Abstract: A data center fabric includes a plurality of Field Programmable Gate Arrays (FPGAs), each FPGA interconnected by a plurality of links with other FPGAs, a plurality of servers in a data center, and physical network functions associated with the data center, wherein the plurality of FPGAs form a virtual fabric for switching between the FPGAs, the plurality of servers, and the physical network functions, and wherein the virtual fabric is arranged in a compound graph and a flat network with each FPGA being a node and a diameter of the compound graph and the flat network is indicative of a maximum number of hops for a packet through the virtual fabric.

Abstract: Systems and methods for creating network topology plans are provided. A method, according to one implementation, includes receiving a first constraint (number of nodes) to be set in a graph (under construction). The graph, when complete, is configured to include nodes and interconnections so as to enable each node to reach any other node via one or more interconnections. The method also includes receiving a second constraint (number of degrees) to be set with respect to each node and which defines the maximum number of interconnections that can be connected to each node. Upon determining that the graph is developed to an extent where each node is connected to at least one interconnection and every node is reachable by any other node, the method further includes performing functions to improve metrics related to a hop count that represents a number of interconnections needed for one node to reach another.

Abstract: Systems and methods include an optical switch system which provides a combination of µLED arrays, PDs, imaging fiber cables, and crosspoint switch on a single chip. The system includes one or more input ports with each inputport configured to connect to an inputfiber bundle. The system additionally includes one or more output ports with each output port configured to connect to an outputfiber cable, wherein each of the inputfiber bundle and the outputfiber cable include a plurality of fiber cores. An electrical crosspoint switch is connected to the one or more input ports and the one or more output ports, wherein the electrical crosspoint switch is configured to connect a given input port to a corresponding output port, including all signals in the input fiber cable to the corresponding output fiber cable.