Abstract: A data center network utilizing a single layer architecture includes a plurality of switches each with a plurality of ports including a first set of ports of the plurality of ports including network facing ports and a second set of ports of the plurality of ports including server facing ports; and a plurality of optical reshufflers configured to randomly interconnect the plurality of switches via the network facing ports of each in a single layer, unstructured network based on a plurality of structural constraints. The value of a number of the network facing ports is equal or greater than a number of the server facing ports and wherein each of the plurality of switches is a switch with attached servers. The plurality of optical reshufflers can be spatially partitioned across a layer with each optical reshuffler restricted to internal connectivity.

Abstract: An electrical cross-point switch N inputs, each at least 10 Gbps, connected to input transmission lines; M outputs, each at least 10 Gbps, connected to output transmission lines; at least two Radio Frequency (RF) Microelectromechanical systems (MEMS) switches selectively interconnecting each input transmission line and each output transmission line; and control and addressing circuitry configured to selectively control interconnection of each input transmission line and each output transmission line via the at least two RF MEMS switches. The at least two RF MEMS switches can be embedded in each input transmission line and each output transmission line. The input transmission lines and the output transmission lines can each be partially shielded microwave transmission lines.

Abstract: The present disclosure provides dynamic performance monitoring systems and methods for optical networks to ascertain optical network health in a flexible and accurate manner. The present invention introduces accurate estimations for optical channel performance characteristics based either on existing channels or with a dynamic optical probe configured to measure characteristics on unequipped wavelengths. Advantageously, the dynamic performance monitoring systems and methods introduce the ability to determine physical layer viability in addition to logical layer viability.

Abstract: A high capacity node includes a plurality of receiver sections and a plurality of transmitter sections; and an electrical switching fabric between the plurality of receiver sections and the plurality of transmitter sections, wherein each of the plurality of receiver sections and the plurality of transmitter sections interface the electrical switching fabric at a full signal level and the electrical switching fabric is configured to perform flow switching on the full signal level between respective receiver sections and transmitter sections, and wherein the plurality of receiver sections, the plurality of transmitter sections, and one or more stages of the electrical switching fabric are implemented in one or more optoelectronic integrated circuits.

Abstract: An electrical switch circuit adapted to switch digital, high-speed signals with low power includes a plurality of input buffers each coupled to an input transmission line of a plurality of input transmission lines, wherein each input buffer utilizes a digital inverter; a plurality of output buffers each coupled to an output transmission line of a plurality of output transmission lines, wherein each output buffer utilizes a digital inverter; and a plurality of switches each coupled to an associated input transmission line and an associated output transmission line, wherein each of the input transmission line, the output transmission line, and the plurality of switches are in a single line configuration. For the low power, each of the input buffers, the output buffers, the input transmission lines, and the output transmission lines can be unterminated.

Abstract: A Microelectromechanical systems (MEMS)-based N×M cross-point switch, a MEMS-based system, and a method provide MEMS-based cross-point electrical switching for a Layer 0 flow-based switch. The N×M cross-point switch includes N inputs each at least 10 Gbps, M output each at least 10 Gbps, a plurality of Radio Frequency (RF) MEMS switches selectively interconnecting the N inputs to the M outputs; and control and addressing circuitry to selectively control the plurality of RF MEMS switches to switch each of the N inputs to a corresponding output of the M outputs. The systems and methods provide an electrical switching fabric for flow-based switching of wavelengths that can be part of a Reconfigurable Electrical Add/Drop Multiplexer (READM) with similar functionality as a ROADM in the electronic domain.

Abstract: A high capacity node includes a plurality of transceivers each with a transmitter configured to support a wavelength within a full transparent window of one or more optical fibers; and one or more optical amplifiers covering the full transparent window, wherein the one or more optical amplifiers comprise one of (i) a single ultra-wideband amplifier covering the full transparent window and (ii) a plurality of amplifiers each supporting a different band of the full transparent window.

Abstract: A software programmable optical transceiver includes one or more Field Programmable Gate Arrays (FPGAs); and an electro-optical front end communicatively coupled to the one or more FPGAs, wherein the electro-optical front end comprises a transmitter and a receiver, wherein the transmitter is adapted to transmit a transmit signal from the one or more FPGAs and the receiver is adapted to receive a receive signal and provide to the one or more FPGAs, wherein one or more applications are utilized to dynamically configure the one or more FPGAs for digital functionality to operate the software programmable optical transceiver in an associated mode. The one or more applications are loaded as needed to configure the software programmable optical transceiver in the associated mode, without requiring pre-programmed hardware in the software programmable optical transceiver for operation in a plurality of operating modes.

Abstract: A circuit that may include a circuit network and a transmission line coupled to the circuit network. The circuit network may include an electro-optic modulator and various inductors. The electro-optic modulator may be a capacitive load having a predetermined capacitance. The circuit may further include a resistor coupled to the circuit network. The resistor may have a resistance value configured to produce a first impedance with the circuit network. The first impedance may be configured to match substantially with a second impedance in the transmission line. The circuit may further include an electric driver couple to the transmission line. The electric driver may be configured for transmitting a driving voltage to the electro-optic modulator. The driving voltage may be configured to generate a predetermined voltage swing across the electro-optic modulator.

Abstract: Systems and methods to detect a wavelength of interest (?RX) amongst one or more wavelengths (?1, ?2, . . . , ?N) include receiving the one or more wavelengths (?1, ?2, . . . , ?N); using a portion of a transmitted wavelength (?TX) as a Local Oscillator (LO) signal to perform performing coherent detection with the one or more wavelengths, wherein the transmitted wavelength (?TX) and the wavelength of interest (?RX) are a bi-directional communication link; and determining a presence of the wavelength of interest (?RX) based on the coherent detection.

Abstract: A system for providing optical connections that may include an optical grating structure and an optical waveguide coupled to the optical grating structure. The optical grating structure may be configured to receive an optical wave, through an interposer, from an optical source. The optical grating structure may be configured to transform the optical wave into a predetermined electromagnetic propagation mode.

Abstract: A high port count switching module includes a plurality of switching circuits disposed on a glass interposer, wherein the plurality of switching circuits each include cross-point switches configured to perform switching at a full signal rate; and a plurality of optical transceivers disposed on the glass interposer and communicatively coupled to the plurality of switching circuits. The glass interposer has i) a low dielectric loss, relative to a silicon, organic, or ceramic interposer, to allow wideband data transmission, ii) a smooth surface, resulting in smooth metal traces to minimize high-frequency skin effect loss, iii) a coefficient of thermal expansion that is matched to the plurality of switching circuits to minimize stresses, and iv) thermal isolation among the plurality of switching circuits due to low thermal conductivity of glass.

Abstract: Systems and methods to detect a wavelength of interest (?RX) amongst one or more wavelengths (?1, ?2, . . . , ?N) include receiving the one or more wavelengths (?1, ?2, . . . , ?N); using a portion of a transmitted wavelength (?TX) as a Local Oscillator (LO) signal to perform performing coherent detection with the one or more wavelengths, wherein the transmitted wavelength (?TX) and the wavelength of interest (?RX) are a bi-directional communication link; and determining a presence of the wavelength of interest (?RX) based on the coherent detection.

Abstract: A system for providing optical connections that may include an optical grating structure and an optical waveguide coupled to the optical grating structure. The optical grating structure may be configured to receive an optical wave, through an interposer, from an optical source. The optical grating structure may be configured to transform the optical wave into a predetermined electromagnetic propagation mode.

Abstract: A method, performed by a server, for supporting equipment service at a site includes receiving, from Head Mounted Equipment (HME) associated with an installer at a site, data relating to an inventory and location of equipment at the site, wherein the data is collected by the HME during equipment service, wherein the equipment includes one or more of a circuit pack, a line module, a cable and power equipment; and checking the equipment service based on the received data and at least one of plans associated with the site and configuration rules of the equipment.

Abstract: The present disclosure provides dynamic performance monitoring systems and methods for optical networks to ascertain optical network health in a flexible and accurate manner. The present invention introduces accurate estimations for optical channel performance characteristics based either on existing channels or with a dynamic optical probe configured to measure characteristics on unequipped wavelengths. Advantageously, the dynamic performance monitoring systems and methods introduce the ability to determine physical layer viability in addition to logical layer viability.

Abstract: An optical switch fabric includes horizontal optical waveguides including a first set and a second set, the first set is configured to receive a first plurality of wavelengths from the one or more external switches and the second set is configured to send a second plurality of wavelengths to the one or more external switches; wavelength-selective drop optical switches associated with the first set, wherein the wavelength-selective drop optical switches are each configured to drop a selected wavelength from a horizontal optical waveguide of the first set to an associated vertical optical waveguide of vertical optical waveguides; and controllable optical switches associated with the vertical optical waveguides, wherein the controllable optical switches are each configured to direct a selected wavelength from a vertical optical waveguide to a horizontal optical waveguide of the second set.

Abstract: A circuit that may include a circuit network and a transmission line coupled to the circuit network. The circuit network may include an electro-optic modulator and various inductors. The electro-optic modulator may be a capacitive load having a predetermined capacitance. The circuit may further include a resistor coupled to the circuit network. The resistor may have a resistance value configured to produce a first impedance with the circuit network. The first impedance may be configured to match substantially with a second impedance in the transmission line. The circuit may further include an electric driver couple to the transmission line. The electric driver may be configured for transmitting a driving voltage to the electro-optic modulator. The driving voltage may be configured to generate a predetermined voltage swing across the electro-optic modulator.

Abstract: The present disclosure provides a multi-carrier optical transmitter, receiver, transceiver, and associated methods utilizing offset quadrature amplitude modulation thereby achieving significant increases in spectral efficiency, with negligible sensitivity penalties. In an exemplary embodiment, an optical transmitter includes circuitry configured to generate a plurality of optical subcarriers, a plurality of data signals for each of the plurality of subcarriers, and a plurality of modulator circuits for each of the plurality of subcarriers, wherein each of the plurality of modulator circuits includes circuitry configured to offset an in-phase component from a quadrature component of one of the plurality data signals by one-half baud period.

Abstract: A concatenated Forward Error Correction (FEC) code method, at an intermediate point, includes receiving, from an ingress point, a signal that is fully encoded with a concatenated FEC code, wherein the concatenated FEC code includes at least an inner code and an outer code; partially decoding the signal by decoding the inner code at the intermediate point; and transmitting the partially decoded signal towards an egress point where the partially decoded signal is fully decoded.