Class / Patent application number | Description | Number of patent applications / Date published |
398051000 | Including photonic packet switching | 42 |
20080205889 | Optical transmission system and optical transmission method - In an optical transmission system, a transmitting transceiving node generates a multiplexed optical-packet signal by performing optical wavelength multiplexing on a plurality of optical packets, and transmits the multiplexed optical-packet signal to a receiving transceiving node. The receiving transceiving node transmits the multiplexed optical-packet signal back to the transmitting transceiving node. The transmitting transceiving node detects a skew amount of the optical packet allocated to each wavelength band of the multiplexed optical-packet signal received from the receiving transceiving node, and adjusts a delay amount of the optical packet based on the detected skew amount. | 08-28-2008 |
20080253768 | High Bit Rate Packet Generation with High Spectral Efficiency in an Optical Network - Optical packets are generated by generating a first optical beam with a first wavelength and a second optical beam with a second optical beam. The first optical beam is modulated with a payload signal and then filtered to reduce the bandwidth of the signal. The second optical beam is modulated with a label signal. The filtered modulated first optical beam and modulated second optical beam are combined to generate a dual-wavelength optical beam. | 10-16-2008 |
20090016717 | MODULAR ADD/DROP MULTIPLEXER INCLUDING A WAVELENGTH SELECTIVE SWITCH - Consistent with the present invention, tunable demultiplexers are provided in WSS-based add/drop multiplexer. The tunable demultiplexers are modular and thus allow the add/drop multiplexer to be readily expandable, and facilitate flexible add/drop capabilities whereby a channel present on any input line to the WSS can be dropped and supplied to one or more desired outputs of the tunable demultiplexer. Similar flexibility can be achieved on the add-side of the WSS. Moreover, the demultiplexers and the WSS are remotely configurable, thus obviating the need to manually disconnect and connect demultiplexers to a router. In a particular embodiment, multicast switches are provided that permit the same channel, for example, to be provided to one or more outputs of the add/drop multiplexer, such that copy of the channel can carry working traffic while the other copy carries protection traffic. As a result, 1+1 and 1:N optical layer protection can be achieved. | 01-15-2009 |
20090047018 | METHOD AND APPARATUS FOR L3-AWARE SWITCHING IN AN ETHERNET PASSIVE OPTICAL NETWORK - One embodiment of the present invention provides a system that performs layer 3 (L3) aware switching in an Ethernet passive optical network (EPON) which includes a central node and at least one remote node. During operation, the system maintains a set of mapping information which indicates a correspondence relationship between a logical link identifier of a remote node, a medium access control (MAC) address for a subscriber coupled to the remote node, and an IP address for the subscriber. Upon receiving a packet which contains an IP address, the system selectively attaches a proper logical link identifier to the packet based on the mapping information and the IP address contained in the packet, thereby allowing only one proper remote node to receive the packet. | 02-19-2009 |
20090067837 | MEANS AND APPARATUS FOR A SCALEABLE CONGESTION FREE SWITCHING SYSTEM WITH INTELLIGENT CONTROL III - A switching system for routing information packets that can simultaneously receive a variety of packet formats. The packet formats include electronic packet transmissions, optical wave division multiplexed data (WDM) with a single frame consisting of a plurality of packets to be sent to a common output line, with each packet traveling on a separate wavelength, WDM packets where the header of an individual packet travels on a wavelength different from the remainder of the packet (i.e. the payload) and the payload either travels on a single wavelength or is subdivided into a plurality of sub-packets with each sub-packet carried on a separate wavelength, and the like. The system includes input devices, a scheduling unit, a switching unit; and variable delay line units. A deconcentrator in the packet switching system creates a minimum gap between packets. | 03-12-2009 |
20090074409 | HIGH-CAPACITY PACKET-SWITCHED NETWORK - A packet-switched WDMA ring network has an architecture utilizing packet stacking and unstacking for enabling nodes to access the entire link capacity by transmitting and receiving packets on available wavelengths. Packets are added and dropped from the ring by optical switches. A flexible credit-based MAC protocol along with an admission algorithm enhance the network throughput capacity. | 03-19-2009 |
20090116836 | Encoding For Information Needed For Routing and Wavelength Assignment in Wavelength Switched Optical Networks - A network component comprising at least one control plane controller configured to implement a method comprising transmitting a message to at least one adjacent control plane controller, wherein the message comprises a Type-Length-Value (TLV) indicating Routing and Wavelength Assignment (RWA) information. Included is a method comprising communicating a message comprising a TLV to a control plane controller, wherein the TLV indicates RWA information. Also included is an apparatus comprising a control plane controller configured to communicate a TLV to at least one adjacent control plane controller, wherein the TLV indicates RWA information. | 05-07-2009 |
20090136230 | System and Method for Managing Wavelength Drift in an Optical Network - In accordance with the teachings of the present invention, a system and method for managing wavelength drift in an optical network is provided. In a particular embodiment, the method includes receiving traffic in one or more optical channels transmitted by one or more transmitters, each channel having successive timeslots, each transmitter assigned to transmit in a channel in allocated timeslots in the channel. The method also includes determining whether the traffic received in a particular channel in a particular timeslot was transmitted by one of the transmitters that was not assigned to transmit in the particular channel. The method further includes, if the traffic in the particular channel was transmitted by one of the transmitters that was not assigned to transmit in the particular channel, identifying the transmitter that was not assigned to transmit but that did transmit in the particular channel, assigning the identified transmitter to transmit in the particular channel, and allocating timeslots in the particular channel to the identified transmitter. | 05-28-2009 |
20090180776 | Architecture for reconfigurable quantum key distribution networks based on entangled photons by wavelength division multiplexing - A system and method for securing communications over a wave division multiplexing optical network between a plurality of users connected to the network. The system utilizes a primary optical source generator that is either tunable, or capable of generating a plurality of wavebands of different frequencies equal to the sum of wavebands serving individual users of the network to facilitate a key exchange between the individual users of the network using summed wavebands, each of which serving an individual user. | 07-16-2009 |
20090226169 | Programmable Optical Network Architecture - A programmable optical network architecture and associated components employing a two-level orthogonal frequency division multiplexing (OFDM)/wavelength division multiplexed (WDM) mechanisms for bandwith virtualization. | 09-10-2009 |
20090263129 | HIGH-SPEED PACKET/ETHERNET DEVICES, METHODS, SYSTEMS AND NETWORKS INCORPORATING TUNABLE PLUGGABLE OPTICS FOR PACKET SWITCHING AND ROUTING FUNCTIONS, AND INCORPORATING GMPS AS THE CONTROL PLANE - Devices, systems software, hardware, apparatus, networks, methods and combinations thereof for providing high speed, high capacity digital transmission over fiber-optic communications networks and systems are provided. The invention is particularly effective and useful in Ethernet systems and other communications networks. The photonic systems of the invention are adapted and arranged to be providable as standalone all-optical platforms that are independent of the terminal or services equipment, and that interface directly with the WDM interfaces of service platforms. Utilizing one or a plurality of tunable lasers, the systems, devices, software, hardware and networks of the invention can be adapted and arranged for monitoring, managing and reconfiguring many aspects of communications networks. Photonic systems of the invention can integrate into a single product, such as a router or other switching device, multiple functions. These functions can be integrated to cost-effectively connect sites within extant or new converged multi-service optical networks. Advantageously, all the key transport network functionalities, such as amplification, dispersion compensation, performance monitoring, multiplexing, signal conditioning, wavelength management, and optical add/drop capabilities required for efficient and dependable fiber-optic communications, are efficiently provided by the invention. Ongoing reconfiguration and integration of the functions of the control plane and data plane and their mapping to one another by means of an automated control plane, advantageously increases the reliability and efficiency of ongoing operation and maintenance of optic fiber systems in commercial and other environments. | 10-22-2009 |
20090304383 | OPTICAL NETWORK SYSTEMS AND METHODS FOR OPERATING SAME - A system for transmitting data packets over a network. The system includes a plurality of first nodes, wherein each first node has a first transceiver configured to transmit a data packet at at least one of a plurality of first wavelengths and receive a data packet at an assigned first wavelength, wherein each first node is configured to pass incoming data packets not transmitted at the assigned first wavelength, a plurality of second nodes, wherein each second node has a second transceiver configured to transmit a data packet at least one of a plurality of second wavelengths and receive a data packet at an assigned second wavelength, wherein each second node is configured to pass incoming data packets not transmitted at the assigned second wavelength, and at least one optical fiber operably connecting the transceivers. | 12-10-2009 |
20100135659 | PACKET-OPTICAL INTEGRATED SWITCH WITHOUT OPTICAL TRANSPONDER - A packet-optical integrated switch without an optical transponder, includes: a packet line card configured to output an Ethernet packet signal to a pre-set output port; a packet switch fabric configured to transfer the packet signal from the packet line card to the output port previously set in a destination address included in the packet signal; a 10 gigabit Ethernet (10 GbE)/optical transport unit level 2 (OTU2) integrated line card configured to convert the packet signal from the packet switch fabric into an OTU2 optical signal having a pre-set wavelength; and a wavelength selection switch fabric configured to allocate the optical signal from the 10 GbE/OTU2 integrated line card to a pre-set wavelength division multiplexing (WDM) port by pre-set wavelength to exchange the optical signal to each port by wavelength, wherein the packet line card, the packet switch fabric, the 10 GbE/OTU2 integrated line card, and the wavelength selection switch fabric perform the reverse operations of the process, respectively. | 06-03-2010 |
20100322625 | OPTICAL TRANSMITTER - A transmitter for generating, starting from a data-packet traffic at input, flows of information to be conveyed via optical signals with different wavelengths towards a plurality of targets in a communications network, the transmitter including: a destination decoder to identify, for each packet in the input packet traffic, a respective destination target in the plurality of targets; a plurality of emitter modules operating at different wavelengths for converting the electrical signals into optical signals; and a de-multiplexer, which is controlled by the destination decoder and is able to drive the emitter modules by sending selectively to each emitter module the electrical signals corresponding to a given packet of the input packet traffic according to the respective destination target identified by the destination decoder. A serialization module is set upstream of the de-multiplexer for converting the packet traffic into a serial flow of bits. The transmitter also includes an optional transmission optical bus inverter for implementing a source coding on the electrical signals sent to the emitter modules. | 12-23-2010 |
20120163815 | OPTICAL PACKET SWITCH DEVICE - An optical packet switch device includes an optical switch control section and an optical switch section. The optical switch control section includes a synchronization pattern detecting unit which detects a frame synchronization pattern from a parallel data signal and detects a delay bit number showing that the frame synchronization pattern is stored at a position shifted by how many bits from the first bit of the parallel data signal, a header analysis unit which analyzes a header and detects an optical packet length and route information of an optical packet signal, and an output competition determining unit which determines passing/discarding of the optical packet signals competing with each other based on the optical packet length and the route information detected by the header analysis unit and delay bit number information detected by the synchronization pattern detecting unit. | 06-28-2012 |
20120201537 | OPTICAL PACKET SWITCHING SYSTEM, OPTICAL PACKET SWITCHING DEVICE, AND OPTICAL PACKET TRANSMITTER DEVICE - An optical packet switching device is provided with: a first input unit and a second input unit for receiving optical packet signals having destination information and information of a wavelength in use; an optical switch unit for routing the optical packet signals; a branching unit for branching the received optical packet signals; an analyzer unit for analyzing the header of the branched optical packet signals so as to detect the destination information and the information of the wavelength in use; and an output competition determination unit for checking for temporal competition of the optical packet signals based on the destination information and for determining whether the optical packet signals should be transmitted or discarded based on the information of the wavelength in use when there is competition. | 08-09-2012 |
20120201538 | OPTICAL PACKET SWITCHING SYSTEM AND OPTICAL PACKET TRANSMITTER DEVICE - An optical packet transmitter device includes: a detection unit for detecting packet-length information and priority information from a received Ether signal; a setting unit for setting, according to the degree of priority, a division factor by which the Ether signal is divided and a wavelength used for an optical packet signal to be transmitted; a header generation unit for generating a header containing destination information, the packet-length information, the priority information, and information of wavelength in use of the Ether signal; a transmission processing unit for dividing the Ether signal according to the set division factor and generating a plurality of packet signals; a header insertion unit for inserting the generated header in at least one packet signal; and an electrical/optical converter unit for converting the plurality of packet signals into optical packet signals of a plurality of wavelengths according to the set wavelength in use. | 08-09-2012 |
20120201539 | PHOTONIC ROUTING SYSTEMS AND METHODS FOR LOOP AVOIDANCE - A photonic network includes a plurality of nodes each supporting add and drop of at least Y wavelengths, a plurality of optical links interconnecting the plurality of nodes, the plurality of optical links support up to X wavelengths and Y≦X, an optical routing protocol configured to compute a loop-free path through the plurality of nodes on the plurality of links, the loop-free path is computed for one of the X wavelengths or a group of the X wavelengths using routing constructs adapted to a photonic domain, and optical components at each of the plurality of nodes configured to selectively block at least one of the X wavelengths based on the computed loop-free path. A photonic routing method and photonic node are also disclosed. | 08-09-2012 |
20120251109 | OPTICAL PACKET SWITCHING SYSTEM - An optical packet switching system includes optical packet switching apparatus and an optical packet transmitting apparatus. The optical packet switching apparatus includes client optical delay units for delaying optical packet signals, network optical delay units for delaying one of the network optical packet signals, the network optical delay unit having a longer delay time than the client optical delay unit, an optical switch unit for switching the route of the inputted client optical packet signal so as to be sent out, an optical switch control unit for controlling the optical switch unit. The optical switch control unit is configured in such a manner as to detect a free time slot. The optical packet transmitting apparatus adjusts transmit timing, with which the client optical packet signal is sent out, in such a manner that the client optical packet signal is inserted into the free time slot. | 10-04-2012 |
20120294612 | OPTICAL PACKET SIGNAL TRANSMISSION DEVICE AND WDM OPTICAL COMMUNICATION NETWORK - An optical packet signal transmission device includes a transmitting unit which includes a plurality of data delay circuits; a plurality of optical branch units which branches some of the optical packet signals as monitor lights; an optical switch which selects one of the monitor lights; a test signal generation circuit which generates a test signal which is used to adjust a delay amount in the data delay circuits; a reference optical pulse generation circuit which generates a reference optical pulse based on the test signal; an optical phase comparator which detects an relative optical phase difference by comparing the phases of the selected monitor light and the reference optical pulse; and a control circuit which sequentially sends the test signals to the data delay circuits, switches the selected monitor light, detects a relative optical phase, determines the delay amount based on a detection result, and sets the delay amount. | 11-22-2012 |
20120321309 | OPTICAL ARCHITECTURE AND CHANNEL PLAN EMPLOYING MULTI-FIBER CONFIGURATIONS FOR DATA CENTER NETWORK SWITCHING - Data center network architectures, systems, and methods that can reduce the cost and complexity of data center networks. Such data center network architectures, systems, and methods employ physical optical ring network and multi-dimensional network topologies and optical nodes to efficiently allocate bandwidth within the data center networks, while reducing the physical interconnectivity requirements of the data center networks. The respective optical nodes can be configured to provide various switching topologies, including, but not limited to, chordal ring switching topologies and multi-dimensional chordal ring switching topologies. | 12-20-2012 |
20130142511 | AUTOMATIC CONFIGURATION OF PACKET NETWORK SERVICES OVER DENSE WAVELENGTH DIVISION MULTIPLEX COMMUNICATION LINKS USING OPTICAL TRANSPORT NETWORK FRAMES - Techniques are provided to automatically configure packet based network services over Dense Wavelength Division Multiplex (DWDM) network communication links. An optical wavelength is detected at an optical interface of a network device configured to send traffic between a packet switched network and an optical network. A message is sent to an optical control plane comprising information configured to request optical configuration information for the optical wavelength. A response to the message is received comprising the optical configuration information and the wavelength is activated at the optical interface using the optical configuration information. A frame is received over the wavelength that is formatted according to an optical protocol. Packet switched network information is extracting from an overhead portion of the frame that is configured to identify network parameters for configuring a packet switched network link and the associated routing. The packet switched network link is configured using the network parameters. | 06-06-2013 |
20130202299 | PATH COMPUTATION SYSTEMS AND METHODS IN OPTICAL NETWORKS - A path computation method includes defining photonic constraints associated with a network, wherein the photonic constraints include wavelength capability constraints at each node in the network, wavelength availability constraints at each node in the network, and nodal connectivity constraints of each node in the network, and performing a constrained path computation in the network using Dijkstra's algorithm on a graph model of the network with the photonic constraints considered therein. An optical network includes a plurality of interconnected nodes each including wavelength capability constraints, wavelength availability constraints, and nodal connectivity constraints, and a path computation element associated with the plurality of interconnected photonic nodes, wherein the path computation element is configured to perform a constrained path computation through the plurality of interconnected nodes using Dijkstra's algorithm on a graph model with the photonic constraints considered therein. | 08-08-2013 |
20130209102 | BIDIRECTIONAL OPTICAL DATA PACKET SWITCHING INTERCONECTION NETWORK - The present disclosure discloses data vortex architecture with bidirectional links in which the packets are routed both in forward as well as in reverse directions through a single node. The disclosed arrangement avoids any packet congestion in the network and improves the BER characteristics. | 08-15-2013 |
20130216226 | FREQUENCY ASSIGNMENT METHOD AND APPARATUS - A frequency assignment method for selecting a frequency width used on a route connecting between a start point and an end point when the start point and the end point of an optical signal are supplied in a photonic network including an optical node that includes an optical switch for switching the optical signal without electrically terminating the optical signal is disclosed. The frequency assignment method includes steps of: obtaining a correlation amount of use state of wavelength or frequency between adjacent links by referring to a route calculation result; determining a fixed frequency width or variable frequency width to be set for a communication route based on the correlation amount; and assigning the fixed frequency width or the variable frequency width on the route. | 08-22-2013 |
20140161450 | System and Method for Accelerating and Decelerating Packets - In one embodiment, a system for accelerating a packet stream includes a first accelerator configured to re-clock the packet stream from a first clock rate to a second clock rate to produce an accelerated packet stream, where the first clock rate is less than the second clock rate, where the packet stream has a first inter-packet gap, where the accelerated packet stream has a second inter-packet gap, and where the second inter-packet gap is greater than the first inter-packet gap. The system also includes a switch coupled to the first accelerator, where the switch is configured to switch the accelerated packet stream at the second clock rate to produce a switched packet stream. | 06-12-2014 |
20140161451 | System and Method for Multi-Wavelength Encoding - In one embodiment, a method for multi-wavelength encoding includes receiving an input optical packet stream having an address and data and encoding the address of the input optical packet stream producing an encoded address including a first group of symbols including a first selected symbol, where the first group of symbols has more than two symbols. The method also includes generating a first wavelength in accordance with the first selected symbol and generating an output optical packet stream having the data of the input optical packet and the first wavelength, where the first wavelength corresponds to the first selected symbol. Additionally, the method includes modulating the first wavelength with the input optical packet stream. | 06-12-2014 |
20140212135 | Switching for a MIMO-OFDM Based Flexible Rate Intra-Data Center Network - A communication system enabling a switching procedure for a multiple-input multiple-output orthogonal frequency division multiplexing (MIMO OFDM) based flexible rate intra-data center network DCN, includes a MIMO OFDM DCN with optical burst switching OBS capability, an optical burst switching OBS procedure for influencing the MIMO OFDM DCN, and a centralized control configuration coupled to the MIMO OFDM DCN and enabling a software defined network SDN configuration in the communication system. | 07-31-2014 |
20140241721 | OPTICAL BURST SWITCHED NETWORK NODES - An optical node includes a wavelength splitter configured to split optical signals comprising multiple optical wavelengths into separate outputs, with each of the separate outputs having a different wavelength. The optical node further includes a detector configured to detect optical signals associated with packets at each of the separate outputs, and determine a modulation applied to the optical signals at each of the separate outputs. The optical node also includes a processing unit configured to identify destination optical nodes for the packets based on the determined modulation. | 08-28-2014 |
20140334818 | System and Method for Photonic Switching - 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. | 11-13-2014 |
20140334819 | System and Method for Photonic Switching - In one embodiment, method of wrapping photonic packets includes receiving, by a node, a first packet and receiving, by the node, a second packet. The method also includes concatenating the first packet and the second packet to produce a concatenated frame, where concatenating the first packet and the second packet includes removing an inter-packet-gap (IPG) between the first packet and the second packet and converting the concatenated frame to a photonic frame, where the concatenated frame is an electrical frame. | 11-13-2014 |
20140334820 | METHOD AND SYSTEM FOR CONFIGURING A CONNECTION-ORIENTED PACKET NETWORK OVER A WAVELENGTH DIVISION MULTIPLEXED OPTICAL NETWORK - A network planning tool and method for configuring a connection-oriented packet network over a WDM optical network without an optical control layer, such as a SONET/SDH layer. The optical network includes a plurality of optical fibers interconnected through nodes and the connection-oriented packet network, such an Ethernet network, MPLS network, or pseudowire network, includes two or more terminal devices. The method and tool function by building an association between the components of the physical layer, such as the optical fiber, and their geographic location or path. The connection-oriented packet network is configured by building multi-link trunks (MLTs) between terminal devices, where the MLTs are built by aggregating lightpaths that traverse distinctive geographic paths. The MLTs are planned and configured through aggregating lightpaths that traverse incongruent sets of photonic elements. A predetermined target for resiliency to physical failure events may determine the degree of congruence allowed between the sets of photonic elements associated with lightpaths in the same MLT. | 11-13-2014 |
20140341575 | SIGNAL MANIPULATOR FOR A QUANTUM COMMUNICATION SYSTEM - A signal manipulator, comprising:
| 11-20-2014 |
20150309265 | Apparatus and Methods for Scalable Photonic Packet Architectures Using PIC Switches - Embodiments are provided for scalable photonic packet fabric architectures using photonic integrated circuit switches. The architectures use compact size silicon photonic circuits that can be arranged in a combined centralized and distributed manner. In an embodiment, an optical switch structure comprises a plurality of core photonic based switches and a plurality of photonic interface units (PIUs) optically coupled to the core photonic based switches and to a plurality of groups of top-of-rack switches (TORs). Each PIU comprises a N×N silicon photonic (SiP) switch optically coupled to a group of TORs associated with the PIU from the groups of TORs, where N is a number of the TORs in each group. The PIU also comprises a plurality of 1×P SiP switches coupled to the group of TORs associated with the PIU and to the core photonic based switches, where P is a number of the core photonic based switches. | 10-29-2015 |
20160044393 | System and Method for Photonic Networks - In one embodiment, a photonic switching fabric includes a first stage including a plurality of first switches and a second stage including a plurality of second switches, where the second stage is optically coupled to the first stage. The photonic switching fabric also includes a third stage including a plurality of third switches, where the third stage is optically coupled to the second stage, where the photonic switching fabric is configured to receive a packet having a destination address, where the destination address includes a group destination address, and where the second stage is configured to be connected in accordance with the group destination address. | 02-11-2016 |
20160050471 | METHOD AND SYSTEM FOR SCHEDULING REMOTE PONs CONNECTED VIA AN ETHERNET SWITCH - One embodiment provides an apparatus for coupling a trunk network to a plurality of leaf passive optical networks (PONs). The apparatus includes one or more uplink ports for coupling to the trunk network, a plurality of downlink ports with a respective downlink port coupled to a leaf PON, and a switch chip for interconnecting the uplink ports and the downlink ports. The switch chip acts as a simple Ethernet switch with no traffic control ability. | 02-18-2016 |
20160057516 | TRANSCEIVERS FOR SIGNAL SWITCHING ARCHITECTURE - An architecture for a fiber optic communication system that uses only two levels of switches, Tier 1 and Tier 3, is described. The architecture allows one to omit the conventional Top of Rack switch level and the conventional Tier 2 switch level while maintaining performance and throughput. The cost to construct and install the improved switch architecture is lower than the cost of the conventional architecture. There are also described a number of transceivers that are suitable for use in the architecture disclosed. The transceivers employ silicon PIC chips that include high contrast silicon waveguides ion the chip and that connect to various configurations of optical fibers. The transceivers provide enhanced switching capacity with fewer devices. | 02-25-2016 |
20160119057 | Method And System For Silicon Photonics Wavelength Division Multiplexing Transceivers - Methods and systems for silicon photonics wavelength division multiplexing transceivers are disclosed and may include, in a transceiver integrated in a silicon photonics chip: generating a first modulated output optical signal at a first wavelength utilizing a first electrical signal, generating a second modulated output optical signal at a second wavelength utilizing a second electrical signal, communicating the first and second modulated output optical signals into an optical fiber coupled to the chip utilizing a multiplexing grating coupler in the chip. A received input optical signal may be split into a modulated input optical signal at the first wavelength and a modulated input optical signal at the second wavelength utilizing a demultiplexing grating coupler in the chip. The first and second modulated input optical signals may be converted to first and second electrical input signals utilizing first and second photodetectors in the chip. | 04-28-2016 |
20160127810 | ASA: A SCALABLE OPTICAL SWITCH - A scalable AWGR-based optical switching fabric and its scheduling method are presented. The switching fabric consists of three stages: two stages (first and third) of AWGRs interconnected by a second stage of optical space switches. The optical switching system is named ASA for the technologies used to construct the three stages: AWGR, Space switching, and AWGR. The first stage and third stage portions of the switching fabric comprise up to N N×N AWGRs (N inputs and N outputs) and the middle stage N N×N optical space switches, wherein N is an odd integer. This makes the switch's total port count N | 05-05-2016 |
20160149662 | PLANAR LIGHTWAVE CIRCUIT ACTIVE CONNECTOR - An assembly of waveguide wavelength multiplexers and demultiplexers, together with continuous wave (CW) laser transmitters that interface to grating couplers on a silicon photonics chip, providing CW sources, multiplexed output and optionally multiplexed input, all using a single photonic lightwave circuit (PLC). | 05-26-2016 |
20160156999 | METHODS AND SYSTEMS FOR BOARD LEVEL PHOTONIC BRIDGES | 06-02-2016 |
20160182982 | INTEGRATED CONTROLLER FOR ROUTING / SWITCHING NETWORK AND UNDERLYING OPTICAL TRANSPORT SYSTEM | 06-23-2016 |