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7613395 Optical network termination apparatus with shared components and passive optical network system comprising same  
A transmission system for a passive optical network comprises a shared optical transmission apparatus, a shared electrical interface apparatus and a plurality of transmission convergence...
7609967 Method and apparatus for automatically upgrading passive optical networks (PONs)  
An apparatus automatically maintains bi-directional communication between an optical network unit (ONU) and a central office (CO) in a passive optical network (PON) when the CO changes from a first...
7599624 System and method for switching channels using tunable laser diodes  
A channel switching function is added to a wavelength division multiplexing passive optical network (WDM-PON) system, which is an access optical network system, and the potential transmission rate...
7593638 Secure upstream transmission in passive optical networks  
A method and system for ensuring confidentiality of signal transmission in a point-to-multi point data transmission network like Ether net passive optical network, including at least one hub, at...
7590353 System and method for bandwidth allocation in an optical light-trail  
The present invention relates to allocating the use of optical light-trails. Optical light-trails enable a plurality of nodes included in a light-trail to share the use of an optical wavelength to...
7583898 Signal-detect-based ranging technique for burst-mode optical systems  
In a passive optical network (PON), a burst-mode receiver of an optical line terminator (OLT) is initialized during an initialization phase, such as ranging, by asserting one or more reset signals...
7558484 Ultra-wide band wireless system  
The present invention provides a kind of ultra-wide band wireless system, which changes the previous electronic structure for ultra-wide band pulse generator, and uses light to generate pulse...
7558482 Method for dynamically establishing logical link in PON systems and an optical network unit for the method  
The invention is applied to a PON system including an optical line terminal (OLT) at a center station, a plurality of optical network units (ONUs) at subscribers' sites, and an optical transmission...
7558481 Method for optimizing enhanced DWDM networks  
An enhanced Dense Wave Division Multiplexing (DWDM) network is optimized through bundling subchannel traffic in DWDM channels at network nodes and “hubbing” the DWDM channels at nodes receiving...
7536105 Synchronous data transmission from plural remote radio devices in W-CDMA base station  
A W-CDMA base station is disclosed in which a base band processing device and a plurality of remote radio devices are provided and downward data is transmitted from the plurality of remote radio...
7515828 System and method for implementing optical light-trails  
An optical network is disclosed that carries optical traffic in multiplexed wavelengths between a number of nodes. The network includes at least one light-trail associated with one of the...
7466919 System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion, of RF service bands within wavelength bands  
A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally...
7457542 Optical access network system  
An optical access network system having a function of correcting upstream signal waveform distortions occurring in the PON section, wherein a central office side apparatus comprises a main...
7457541 System for integrating broadcasting and communication technologies while ensuring qualities of services  
A system for integrating broadcast and communication technologies includes an optical-line terminal (OLT), a optical-network unit (ONU) and a user gateway, wherein a broadcast signal is processed...
7450859 Optical subscriber network system  
An optical subscriber network system is disclosed, which comprises: a server bi-directional optical transmitter including a multiplexer to multiplexes communication data and broadcast data, a...
7450850 Fiber and wire communication system  
This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives...
7437076 Data transmission method in gigabit ethernet passive optical network  
Disclosed is a upstream data transmission method in a gigabit Ethernet-passive optical network (GE-PON) system. In the GE-PON system including an optical line termination having a scheduler and...
7428385 Ethernet PON using time division multiplexing to converge broadcasting/video with data  
An Ethernet passive optical network provides a subscriber with a high speed and large capacity data service and a real time digital broadcast/video service. The network includes an optical line...
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...
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...
7398021 Optical transmitter and passive optical network using the same  
An optical transmitter including a multi-lambda source to output injection light consisting of a plurality of injection wavelengths in channels, a circulator having a first port, a second port, and...
7394985 Wavelength access server (WAS) architecture  
A wavelength access server (WAS) architecture provides aggregation of traffic streams of diverse data communication protocols as well as provision of wavelength resources in an optical transport...
7389048 Optical wavelength-division multiple access system and optical network unit  
The present invention provides an optical wavelength-division multiple access system and a corresponding optical network unit. A wavelength band Da (wavelengths λd 1 to λdn) for downlink optical...
7389047 Optical ring transmission network  
The network comprises an optical ring link (F) and a concentrator (HUB) that sends via one end of the link “downlink” optical signals carried by respective wavelengths and receives “uplink”...
7386236 Multiple wavelength TDMA optical network  
A passive optical network which employs multiple wavelengths to increase overall system bandwidth, with each wavelength being shared by multiple optical network units (ONUs) according to a time...
7382982 Ethernet passive optical network for integrating broadcast and communication based on time division multiplexing scheme  
An Ethernet-PON integrates broadcast/communication through time division multiplexing, which provides users with high-speed, high-volume communication data and high-quality, real-time digital...
7373084 Optical network termination device for use in passive optical network based on WDM/SCM scheme  
A termination device for use in a WDM-SCM PON system can effectively support a multi-channel integration function of a WDM/SCM PON system. The termination device contained in a termination end of a...
7369771 Optical network terminator and optical network connection method using it  
An optical network terminator of the present invention includes an optical wavelength division multiplexer for receiving an optical signal and incoherent light. An optical detection unit converts a...
7369769 Ethernet passive optical network ring and its method of authorization and collision detection  
An Ethernet passive optical network (EPON) ring for providing protection against fiber failures. The optical network unit (ONU) is coupled to the ring fiber by a three-port passive optical...
7366417 Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch  
A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM...
7356209 Method and apparatus for optically powering and multiplexing distributed fiber optic sensors  
An optical power converting apparatus is provided that may be used with remote sensors. A plurality of remote sensors may be coupled to a backbone optical fiber with each sensor having an optical...
7349629 Methods and systems for creating a digital interconnect fabric  
An optical network provides a digital interconnect fabric allowing nodes to seamlessly communicate with each other. Each node is connected to a bi-directional optical bus through passive optical...
7340171 FTTH system for broadcast/communication convergence using IEEE 1394  
A broadcast/communication convergence system, and an FTTH (Fiber To The Home) system that can accommodate broadcast signals of various channels and variable band signals by converging broadcast and...
7321730 Method and apparatus for the transmission fault detection in an access network  
An optical network unit (ONU) interconnected by passive optical network (PON) equipment to an optical line terminal (OLT) is identified using secondary modulation of the optical carrier to impress...
7308205 Optical transmission apparatus  
In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of...
7292785 Optical transmission system constructing method and system  
An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with...
7272321 Passive optical network  
A passive optical network. The optical network has an optical fiber ring with ends terminating at an optical line terminal. The optical line terminal transmits signals through the fiber ring to...
7248802 Distribution of a synchronization signal in an optical communication system  
The invention relates to the distribution of a synchronization signal in an optical communication system which is inherently asynchronous. In order to accomplish a cost-efficient mechanism for...
7239813 Bit synchronization circuit and central terminal for PON systems  
A bit synchronization circuit composed of a multiphase data sampling unit for converting each received burst data sets to multiphase data trains, a phase determination unit for generating a control...
7209663 Apparatus and method for repeating signal by using wireless optical transmission  
A repeating apparatus and method using wireless optical transmission is disclosed. The repeating apparatus includes a donor device for transmitting two identical copies of an optical signal by...
7203422 Optical network unit, wavelength splitter, and optical wavelength-division multiplexing access system  
In an optical wavelength division multiplexed access system, a center unit (OSU) and n optical network units (ONUs) are connected together via a wavelength splitter and optical fiber transmission...
7167649 Dense wavelength division multiplexing-passive optical network system utilizing self-injection locking of Fabry-Perot laser diodes  
Disclosed is a dense wavelength division multiplexing-passive optical network (DWDM-PON) system utilizing self-injection locking of Fabry-Perot laser diodes, in which output optical signals of...
7164862 Transmitting an optical signal with corresponding WDM and TDM channels  
An optical signal transmitter is disclosed that transmits an optical signal with corresponding Wavelength Division Multiplexing (WDM) channels and Time Division Multiplexing (TDM) channels. The...
7139487 Light burst transmission/reception control system, parent station device used in the same, child station device, and light burst transmission/reception control method  
A host station apparatus ( 10 ) generates band allocation information including identifications of slave station apparatuses ( 20 - 1 through 200 -n) and types of data to be transmitted by the...
7127174 Hybrid-integrated high-speed OTDM module  
A novel optical time division multiplexing (OTDM) module based on hybrid-integrated optical chips is disclosed. An integrated modulator chip generates optical RZ signal streams which are then...
7123836 All-optical network distribution system  
The optical fiber-based communication system comprises a distribution optical fiber that extends proximately to a plurality of end users, and tap-off modules coupled to the distribution optical...
7065298 Code-based optical networks, methods, and apparatus  
Optical communication systems include a central station that encodes data transmitted to multiplexing (mux) stations or user stations. The central station also decodes data received from the mux...
7054557 Technique for routing data within an optical network  
A technique for routing data within an optical network having a plurality of network nodes is disclosed. In one embodiment, the technique is realized by receiving data at a first network node via a...
7020356 Selection module for an optical signal switch and an optical signal switch  
A selection module for use in an optical signal switch comprises a spatial selector comprising a plurality of inputs each receiving a wavelength division multiplexed optical signal comprising a...
7013086 Access node for optical networks with variable-access wavelengths, user device for connection to such an access node, method for feeding a number of signals from a number of users into an optical network and using an access node and at least one user device for carrying out such a method  
The access node for optical networks with variable access wavelengths can be connected to user devices via respective first optical conductors and can be connected to the optical network via second...
Matches 1 - 50 out of 124 1 2 3 >