Abstract:
The disclosure relates to a transceiver operative to transmit and receive optical signals. The transceiver comprises a laser, a power splitter, a dual-polarization in-phase and quadrature modulator, DP-IQM, a first circulator (C1, C3), a second circulator (C2, C4), a first optical polarization controller, PC, a second optical polarization controller and a dual-polarization coherent receiver, DP-CRx. There is provided a system comprising a first transceiver and a second transceiver as described previously. The transceiver requires neither high speed DSP nor high resolution data converters to achieve 50 Gbaud DP-16QAM, DP standing for dual polarization and QAM standing for quadrature amplitude modulation, yielding 400 Gb/s over 10 km below the 2.2×10 -4 KP4 forward error correction (FEC) threshold.
Abstract:
A small form-factor pluggable (SFP) module and related method are provided to perform additional packet processing in a communication network. The SFP module is generally configured to at least partially process data packets as they transit from a first networking equipment toward a second networking equipment in order to modify or otherwise update header information of the packets as a function of the content of their data payload. Modifying header information of data packets as they transit between interconnected networking equipments allows interconnected networking equipments to perform packet processing on the modified header information.
Abstract:
An optical adapter includes an optical coupler, a plurality of fiber optic cables and an optical wavelength conversion device. The optical coupler is operable to receive a plurality of multi-mode single-wavelength optical signals having the same frequency. The plurality of fiber optic cables are arranged in parallel and each have a first end connected to the optical coupler and the other end is coupled to the optical wavelength conversion device. The optical wavelength conversion device is operable to optically convert between the plurality of multi-mode single-wavelength optical signals at the same frequency and a plurality of single-mode optical signals at different frequencies and multiplex the plurality of single-mode optical signals at the different frequencies onto a single-mode multi-wavelength optical waveguide. A corresponding optical adapter is provided for the receive side.
Abstract:
Devices, systems and methods for run-time reassignment of the interconnection between devices pertaining to a Physical (PHY) layer and devices pertaining to a Media Access Control (MAC) layer. The PHY devices are typically located on I/O blades, while MAC devices are typically located on forwarding and control blades. A reconfigurable crossbar device interconnects I/O blades, forwarding blades and control blades. The network of PHY and MAC devices may use a standardized interfacing protocol configured to decouple physically a PHY and a MAC device. Remapping between a PHY and a MAC device is controlled by system management functions. A 'Remote Fault' or a 'Pause' message is used in combination with empty-traffic indicating 'idle patterns' in a system configured to accommodate the remapping of I/O blades to different Application-Specific Standard Product (ASSP) blades so as to avoid or eliminate, respectively, the loss of packets during hardware or software upgrades. During reassignment, traffic is buffered in the MAC device, to which the PHY device is to be switched.
Abstract:
Systems and methods according to these exemplary embodiments provide for optical interconnection using a combination of an arrayed waveguide grating router (AWGr) and optical crossbar. Optical wavelengths can be flexibly routed from an input port to one or more output ports. Scaling of the system is easily accommodated.
Abstract:
A backplane for a computing system may include a connector configured to provide a detachable mechanical coupling with a circuit board, and an optical signal path configured to carry optical signals. In addition, an optical bypass switch may be configured to couple optical signals from the optical signal path to the circuit board and to couple optical signals from the circuit board to the optical signal path responsive to an enabling signal. The optical bypass switch may be further configured to transmit optical signals therethrough to bypass the circuit board responsive to an absence of the enabling signal. Related circuit boards, computing systems, bypass switches, and methods are also discussed.
Abstract:
The invention relates to a method, optical receiver and systems for receiving drifting wavelengths carried on an optical fiber from an optical transmitter. The optical receiver executes the steps of making (100) repetitive wavelength sweeps to detect wavelengths carried by the optical fiber, storing (102) wavelengths calibration values associated with the detected wavelengths and controlling (104) a plurality of reception units through Digital to Analog Converters (DAC) and Ring Resonator Drivers (RRD) (DACDs) by assigning the wavelengths calibration values to the reception units, thereby programming each reception unit to subtract one wavelength from the optical fiber.
Abstract:
An optical adapter includes an optical coupler, a plurality of fiber optic cables and an optical wavelength conversion device. The optical coupler is operable to receive a plurality of multi-mode single-wavelength optical signals having the same frequency. The plurality of fiber optic cables are arranged in parallel and each have a first end connected to the optical coupler and the other end is coupled to the optical wavelength conversion device. The optical wavelength conversion device is operable to optically convert between the plurality of multi-mode single-wavelength optical signals at the same frequency and a plurality of single-mode optical signals at different frequencies and multiplex the plurality of single-mode optical signals at the different frequencies onto a single-mode multi-wavelength optical waveguide. A corresponding optical adapter is provided for the receive side.
Abstract:
Devices, systems and methods for run-time reassignment of the interconnection between devices pertaining to a Physical (PHY) layer and devices pertaining to a Media Access Control (MAC) layer, with no packet loss or with at most one packet lost are provided. The strategies employed by these devices, systems and methods used REMOTE FAULT, PAUSE and IDLE PATTERN messages. The devices may be interconnected via a reconfigurable optical crossbar.
Abstract:
Systems and methods according to these exemplary embodiments provide for optical interconnection using optical splitters and interferometer-based optical switching. Optical signals can be routed from an input port to one or more output ports via at least one splitter and at least one interferometer, e.g., a Mach Zehnder interferometer. According to one exemplary embodiment, signal degradation associated with signal splitting is mitigated by using a binary tree of splitters and interferometers between input ports and output ports.