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7620322 |
Load sharing nodes in a network utilising shared optical protection
A method of transmitting packet traffic between first and second network nodes in a shared protection optical transmission network, the method comprising defining first and second traffic paths...
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7620321 |
Optical transmitting apparatus, method of increasing the number of paths of the apparatus, and optical switch module for increasing the number of paths of the apparatus
An optical transmitting apparatus is configured such that K pieces of output ports of optical path switching units whose input port is connected to k-th input transmission path are connected to...
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7620320 |
Fibre selective control switch system
The present invention is directed to a Fiber Selective Control Switch system for simulating human intervention during a test process for fiber network environments. The Fiber Selective Control...
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7620273 |
Methods and devices for providing optical, serviced-enabled cross-connections
A technique for improving optical cross-connections comprises placing a switch in front of a number of processing units. So configured, the units are no longer dedicated to a specific link or...
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7616889 |
Byte-wide optical backplane switching method
A byte-wide optical switch and switching method are provided. The optical switch includes a first set of ports for receiving in parallel an optical byte of data, and multiple second sets of ports...
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7613394 |
Optical switching device
In the present optical switching device, a reference light of a wavelength same as or in the vicinity of a wavelength of a signal light, is given from a wavelength-variable light source via each...
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7593637 |
Optical transport system architecture for remote terminal connectivity
The invention pertains to optical fiber transmission systems, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the...
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7590359 |
Optical communication node system, all-optical packet routing system, and all-optical packet routing method and all-optical packet routing network using the node and routing systems
To transfer an optical packet generated from one source communication node system to a destination communication node system without optical-to-electrical or electrical-to-optical conversion in a...
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7590125 |
Simplified control of a transmission network element handling both SDH and OTH signals for signals passing both SDH and OTH parts
The present invention relates to a control system of a network element ( 18 ) capable of handling transmission signals of an optical transport network ( 16 ) (OTN) and transmission signals of a...
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7590102 |
Multi-stage packet switching system
In general, in one aspect, the disclosure describes a multi-stage switch having at least one ingress switch module to receive data and to generate frames that are transmitted as a wavelength...
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7580636 |
Optical switch and method for controlling optical path thereof
An optical switch is provided with: an optical matrix switch; and an optical path decision section which divides input light into two branches, supplies the input light of one divided branch to the...
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7577362 |
Optical access network method, optical access network, and optical switch for optical access network
An optical access network method, an optical access network and an optical switch for an optical access network, capable of solving all the three problems in the conventional GE-PON: transmission...
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7577357 |
Optical switch
The present invention provides an optical switch in which a switching operation is not affected even when the polarization state of a control light varies. The optical switch comprises a loop-form...
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7577356 |
Optical communication systems and methods of operating such optical communication systems
An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device...
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7573909 |
Method and system for programmable data dependant network routing
A method and system for routing fiber channel frames using a fiber channel switch element is provided. The switch element includes, a look up table that is indexed by domain, area, a virtual...
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7570886 |
Network with optical bandwidth on demand
A network arrangement where traffic elements of network nodes are programmable. A traffic element comprises electrically controllable transceiver pool having one or more ports that are coupled to...
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7567756 |
Method of automatic adjustment of dither amplitude of MEMS mirror arrays
Methods for adjusting dither amplitude for MEMS mirrors in optical switches and optical switches employing such a method are disclosed. A dither amplitude of one or more MEMS mirrors may be...
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7567564 |
Optical access network apparatus and data signal sending method therefor
The present invention realizes an Optical Line Terminal (OLT) in an optical access network and a data signal sending method for the optical access network in which the reliability of the network...
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7565079 |
System and method for optical network demarcation
A system and method are presented for demarcating an optical network. The system comprises an optical monitor that receives a portion of an outbound signal from an optical network and generates a...
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7561800 |
Optical burst switching system and method using duplicate burst transmission
An optical burst switching (OBS) system and a method using duplicate optical burst transmission is provided. In accordance with the present invention, optical bursts do not have the same priority...
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7561799 |
Optical path switching device
An optical path switching device includes compact and unpackaged components; the components are mounted onto a single platform; and the components are coupled by luminous flux. Connection between...
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7548693 |
Relay transmission apparatus
A relay transmission apparatus in which the effectiveness of a protecting function is improved by suppressing variation of an OSNR value of a signal regardless of the distance that the signal is...
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7542675 |
Optical switch with power equalization
An optical intensity control system for use with an optical switch providing individual signal paths between input and output ports. The system has a optical splitters connectable to output...
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7529441 |
Wavelength routing optical switch
An optical switch for routing arbitrary wavelengths between optical fibers in optical networks. The optical switch may include a highly wavelength dispersive element together with a spatially...
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7526202 |
Architecture and method for framing optical control and data bursts within optical transport unit structures in photonic burst-switched networks
An optical network, which includes edge and switching nodes, optically communicate information formatted into bursts that are included in one or more optical channel transport unit (OTU) frames...
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7522790 |
Optical communications system with selective block/add capability of an optical channel
An optical communications system has a selective block/add capability of an optical channel. An optical beam separator receives and separates an input mixed optical beam into a separated optical...
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7505686 |
Highly scalable multi-granular node architecture
Highly Scalable Multi-granular Node Architecture based upon strictly non-blocking waveband switch constructed around cyclic arrayed waveguide grating (AWG) routers. In one implementation, the...
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7499650 |
Optical burst switching node with internal speedup
A multiple-plane OBS node comprises N input ports, N 1×N switches, N switching planes, N 2 FDLs, N optical couplers, and N output ports, each input port is connected with the input of a...
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7493041 |
Optical path re-arrangement method for optical communication network
When an optical path arrangement is re-arranged, the packet loss amount is reduced by judging whether to perform the shift in one stage or whether to perform the shift in two stages in accordance...
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7492826 |
Bidirectional buffered interface for crosspoint switch
A bidirectional crosspoint switch interface employs a pair of backward-connected transimpedance amplifiers of the type disclosed in the L. Enriquez U.S. Pat. No. 6,411,163, and associated scaling...
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7480458 |
Link system for photonic cross connect and transmission apparatus
Between photonic cross connects (PXCs) 3 and 4, an in-use system path passing through transmission apparatus (WDMs) 5 and 7 are set, and a backup system passing through transmission...
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7466924 |
Reconfigurable data communications system with a removable optical backplane connector
The present invention is directed to a reconfigurable data communications system. The system includes a removable optical backplane connector with a first end and a second end, a first data...
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7462812 |
Optical switch apparatus and optical switching system
An optical switching system having a transmission node. The transmission node includes a bit pattern processing unit for processing a bit pattern of transmitted data to stabilize optical power of a...
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7460783 |
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures in optical networks are described. One embodiment is a method for allocation of protection...
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7460527 |
Port aggregation for fibre channel interfaces
According to the present invention, methods and apparatus are provided to allow efficient and effective aggregation of ports into port channels in a fiber channel network. A local fiber channel...
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7457539 |
2×2 optical switch
A 2×2 optical switch routs each light signal received from input ports to selected output. The optical switch has an adjustable light signal steering element, a fixed light signal steering...
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7454138 |
Method for optimizing path of optical network, and optical transmission node for realizing path optimization
Span information (information about conditions of a path between a node of interest and another, adjacent node connected thereto) retained in respective nodes is cumulatively transmitted from a...
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7437075 |
Integrated reconfigurable optical add/drop multiplexer
An integrated reconfigurable planar lightwave add-drop (RPLAD) multiplexer for use in a WDM optical communication system is arranged such that each drop port can receive any wavelength channel and...
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7437071 |
Distributive optical switching control system
A localized and distributive optical switching control system is separated into three localized systems: a sensor system, a processor system, and a position driver system. The sensor system detects...
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7434249 |
FTTH PON that O/E converts 1310 nm for output to transmitters for E/O as 1550 nm
A fiber to the home (FTTH) system based on a passive optical network (PON) includes an optical line terminal (OLT) block, an optical network terminal (ONT) block, and an optical distribution...
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7433597 |
Deflection routing address method for all-optical packet-switched networks with arbitrary topologies
A method of deflection routing a packet in an all-optical communication network is described. Routing and destination information is contained in the address header of the packet and is generated...
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7428384 |
Optical router
According the invention, a multiplexed light composed of a signal light of a signal wavelength, and a first route control light of a first route control wavelength different from the signal...
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7428383 |
Architecture, method and system of WDM-based photonic burst switched networks
An intelligent photonic burst switched (PBS) network includes edge nodes and switching nodes. The PBS edge node includes a flow classifier, flow manager, and ingress/egress PBS MAC layer...
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7426347 |
Shared optical performance monitoring
An apparatus for shared optical performance monitoring (OPM) is provided. A wavelength sensitive device receives light at an input port and routes it wavelength selectively to a set of output...
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7421203 |
Method for transmitting packet in wireless access network based on wavelength identification code scheme
A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network...
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7421200 |
Reduced loss ultra-fast semiconductor modulator and switch
An optical modulator or switch is disclosed. An apparatus includes an optical splitter disposed in a semiconductor material that splits an optical beam having a first wavelength into first and...
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7412169 |
FTTH system for convergence of broadcasting and communication through switched broadcasting
A fiber to the home FTTH network for convergence of broadcasting and communication is disclosed. The network includes: an OLT for receiving and converting a first predetermined number of broadcast...
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7409157 |
Optical switch
The present invention provides an optical switch in which a switching operation is not affected even when the polarization state of a control light varies. The optical switch includes a loop-form...
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7403712 |
Matrix time division multiplex (MTDM) interrogation
Embodiments of present system encompass: a plurality of laser sources that produce a plurality of respectively different optical wavelengths; a matrix switch having a plurality of inputs...
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7403711 |
Optical digital-to-analog converter and method of optically converting digital data to analog form
An optical digital-to-analog (D/A) converter and a method of optically converting digital data into analog form. In one embodiment, the optical D/A converter includes: (1) a splitter configured to...
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