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7630642 |
Ranging method for communication system between optical line terminal and plurality of optical network units
In 1 to N communication based on code division multiplexing, ranging is performed by following the first to ninth steps. First step: all the optical network units are set to standby status. Second...
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7630640 |
Bidirectional time division multiplexing optical communication system
An optical communication system which constructs, at low cost, a network that uses Time Division Multiplexing in at least one direction of the communication. The optical communication system...
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7627247 |
Optical time division multiplexing
A method of multiplexing optical signals in a node of an optical network including as inputs a plurality of electrical signals, a plurality of laser transmitters, and as outputs a plurality of...
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7616894 |
System and method for mitigating dispersion slope in an optical communication system
A system and method for mitigating dispersion slope is capable of reducing the performance impact on an optical communication system caused by dispersion slope. The system and method receives an...
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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...
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7603036 |
System and method for managing network components in a hybrid passive optical network
A method includes transmitting, at a first wavelength, a first configuration message on the PON including a first transmitter interface number and transmitting, at a second wavelength, a second...
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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...
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7596321 |
Time division multiplexing of inter-system channel data streams for transmission across a network
A time division multiplexing (TDM) facility is presented for time division multiplexing at least two inter-system channel (ISC) data streams to create a TDM multiplexed data stream. The TDM...
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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...
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7577363 |
Optical device and method of converting WDM signals into an OTDM signal and vice versa
A device and a method for converting WDM signals into an OTDM signal. A time shift is introduced between the pulses of the WDM signals carried by the optical carriers. A modulation means is ( 112,...
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7574139 |
Carrier-suppressed optical time domain multiplexing
A method and an apparatus for implementing carrier suppressed data format on conventional OTDM modules is provided. Adaptive phase shifting of optical signals traversing one of the tributaries of...
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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...
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7548695 |
Wireless signal distribution system and method
A communications system connects one or more BTS hotels with several remote access nodes on a transmission ring. Each operator has one or more separate optical wavelengths. Signal flow around the...
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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...
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7529483 |
Communication systems
A communication system for the mutual interconnection of a plurality of lower traffic level (5 Terabit) switch nodes via a relatively higher traffic level (Petabit) connection bus, which system...
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7489879 |
Laser device for optical data transmission
A Laser device for optical packet data transmission in TDM-systems is provided. The device comprises a laser light source for outputting laser light beam and a laser driver for driving the laser...
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7483633 |
Optical communication network
An optical communication network using a communication system which is combined optical time-division multiplexing and optical wavelength-division multiplexing. The electric/optical converter...
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7483642 |
Receiver for OTDM/PDM optical signals
A receiver for an OTDM/PDM pulse train ( 10 ) in which the pulses ( 12 ) have alternating polarizations (P 1, P 2 ) has a polarization insensitive optical switch ( 16; 161, 162, 163, 164 ) for...
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7474853 |
Non-blocking all-optical switching network dynamic data scheduling system and implementation method
A non-blocking optical matrix core switching method that includes maintaining a schedule for routing data through an optical matrix core and receiving and analyzing reports from peripheral devices....
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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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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...
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7450845 |
Expandable universal network
A wide-coverage high-capacity network that scales to multiples of petabits per second is disclosed. The network comprises numerous universal edge nodes interconnected by numerous disjoint optical...
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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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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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7411947 |
Storage system, computer system and interface module
An interface module comprises a serial signal transceiver to be connected to an external transmission path and an interface processing unit connected to the transceiver. The interface processing...
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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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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...
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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...
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7376349 |
Analog to digital converter systems and methods
Systems and methods are disclosed herein to provide analog-to-digital converter techniques. For example, in accordance with an embodiment of the present invention, an analog-to-digital converter...
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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...
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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...
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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...
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7349630 |
Hybrid WDM/TDM network architecture
A method and apparatus for configuring a server/client network architecture. A server network device impresses an optical signal onto an optical link at a specified wavelength, where distinct...
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7340172 |
Optical WDM-TDM network
An optical WDM-TDM network includes a plurality of devices, each of the devices including at least one optical add/drop device adapted to drop optical signals of at least one channel of a plurality...
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7330656 |
Passive optical network employing code division multiple access
A PON and a method of transmitting data employing different upstream and downstream transmission protocols are disclosed. The PON includes: a plurality of ONTs; WDM filters; an OLT receiving and...
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7330657 |
Method to demultiplex wavelengths of light
An apparatus and method for demultiplexing multiple wavelengths of light. In one embodiment, an optical signal having a plurality of wavelengths is provided to an optical-to-electrical (OE) circuit...
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7330660 |
Optical time division multiplexer
A TDM comprising: (a) at least two wavelength-tunable devices for outputting a signal, each wavelength-tunable device being adapted to change signal wavelength in response to a change signal; (b) a...
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7324753 |
Optical communication network using a code division multiplexing method
The present invention is a high-speed and low-cost optical communication network. A preferred embodiment of this optical communication network comprises an accommodation device, optical couplers...
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7321731 |
Optical pulse position modulation discriminator
Systems and methods are disclosed herein to provide various optical techniques. For example, in accordance with an embodiment of the present invention, a pulse position modulation discriminator...
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7312909 |
Method for synchronizing the phase of optical return-to-zero (RZ) data signals
In order to synchronize the phases of two RZ data signals (RZS 1 , RZS 2 ) combined to form a time multiplex signal (MS 1 ), the power of half the fundamental made of the multiplex signal (MS 1 )...
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7298975 |
Synchronous collapsed ring architecture for real-time signal switching and distribution
A method and system includes at least one interconnect hub, connecting the at least one interconnect hub to a plurality of audio connection devices to form a network of audio connection devices...
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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...
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7289732 |
Broadcast/communication unified passive optical network system
Disclosed is a broadcast/communication unified passive optical network system. The network system comprises: an optical line termination that time-division multiplexes the received digital...
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7283753 |
System and method for WDM communication with interleaving of optical signals for efficient wavelength utilization
In a system and method of optical communication, optical signals are generated in multiple wavelength channels. Each optical signal is passively transported from an origination node of a network to...
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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...
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7272320 |
Time division multiplexing of inter-system channel data streams for transmission across a network
A time division multiplexing (TDM) facility is presented for time division multiplexing at least two inter-system channel (ISC) data streams to create a TDM multiplexed data stream. The TDM...
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7272317 |
Optical multiplexing communication system using ultra high speed signal transmission
In an optical multiplexing communication system, a frequency conversion of the optical multiplexed signals having different amplitudes for different communication channels into a plurality of...
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7269185 |
Management and control of multi-layer networks
A communications network has multiple resource-allocation layers and incorporates a management structure for allocating resources to allocate resources requested by a first layer of said layers...
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7236701 |
Optical transmission system for performing communication using a plurality of communication lines
The present invention provides a low-cost optical transmission system using a plurality of subscriber lines which is capable of efficiently utilizing an optical transmission path. A communication...
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7228073 |
Optical signal transmission device
An optical signal transmission device for transmitting phase information of optical signals is provided. The device includes a multiplexing formatted optical signal generator arranged to generate...
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