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7418204 Passive optical network system providing simultaneously both broadcasting service and data service  
A passive optical network system is disclosed that simultaneously provides both broadcasting service and data service. The passive optical network (PON) amplifies the optical signals for the...
7415205 Wavelength division multiplexed self-healing passive optical network using wavelength injection method  
A wavelength division multiplexed self-healing passive optical network using a wavelength injection method includes a central office for coupling modulated multiplexed optical signals (MMOS) and...
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...
7409154 System and method for a protected optical access ring network  
An optical access network employs a ring topology in which connections between the network units and between the network units and the optical line terminal are via a protection switch. The...
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...
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...
7394981 Optical communication management systems  
An optical medium, whether inside or outside an internet/telecommunications backbone, is managed using a management signal at a wavelength which is distinct from wavelengths of service signals. A...
7391972 Method and apparatus for maintaining behavior of a network terminal  
A method of controlling behavior of an element in a passive optical network (PON) is provided. The method includes (i) issuing a message from a first PON element to a second PON element to cause...
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”...
7386238 Method and system for infrared data communications  
A method and system for conveying contextually relevant information to a wireless client are disclosed. More particularly, a transmitter transmits a diffuse infrared signal to a client having an...
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...
7386234 Apparatus for remotely determining fault of subscriber terminals and method thereof  
An apparatus for remotely determining a fault of subscriber terminals and a method thereof, and more specifically, an apparatus by which in a passive optical network (PON) system, a central office...
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...
7369768 Optical access system  
An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs...
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...
7366416 Hub for a passive optical network hub  
A hub for use in a passive optical network (PON) includes a transmission fiber on which an information-bearing optical signal is received, a double-cladded, rare-earth doped fiber located along the...
7362931 Optical conversion device for shared FTTH distribution network  
An optical conversion device for a shared FTTH distribution network including first and second optical fibers and an optical processing circuit. The optical processing circuit has an input for...
7359637 Self-healing passive optical network  
A self-healing passive optical network is disclosed. The network includes a central office and a remote node connected to the central office through a main optical fiber. The remote node transmits...
7349631 Wavelength-tunable light source and wavelength-division multiplexed transmission system using the source  
The present invention relates to a wavelength-tunable light source whose output wavelength can be externally controlled and a wavelength-division multiplexed transmission system using the source. ...
7349616 Fiber optic local convergence points for multiple dwelling units  
There are provided fiber optic local convergence points (“LCPs”) adapted for use with multiple dwelling units (“MDUs”) that facilitate relatively easy installation and/or 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...
7340170 Wavelength-division multiplexed self-healing passive optical network  
A wavelength-division multiplexed self-healing passive optical network is capable of detecting cut-off and deterioration of feeder fiber and distribution fiber and restoring a network with a star...
7333726 Method and system for supporting multiple service providers within a single optical network  
Analog video signals are communicated from multiple service providers to subscribers by using analog optical carriers. Unlike digital optical carriers that typically support data services or IP TV,...
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...
7317874 Adaptive optical transceiver for fiber access communications  
An optical module includes a transmitter optical sub-assembly comprising a transmitter configured to emit a multi-longitudinal-mode (MLM) spectrum signal having an emission spectrum comprising a...
7315695 Method and apparatus for defining optical broadband services on an optical communication network  
A method and apparatus for defining optical broadband services on an optical communication network enables broadband optical services to be built from basic service building blocks. According to an...
7305187 Optical communications system  
An optical communication system comprises a base station, a plurality of trunk optical fibers connected to the base station, a plurality of star couplers connected to the trunk optical fibers, a...
7295776 Optical LAN device  
An ring type optical LAN device includes a master node and a plurality of slave nodes that are interconnected by an optical fiber cable. A plurality of optical bypass transmission lines are...
7283749 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...
7272318 Passive optical network employing multi-carrier code division multiple access  
A passive optical network (PON) for providing a large amount of data at high speed to subscribers is provided. In particular, a PON employing a multi-carrier CDMA in which a CDMA method is applied...
7272315 Technique for transferring information in a passive optical network  
A technique for transferring information in a passive optical network is disclosed. The technique may be realized as a method for transferring information in a passive optical network having a...
7266265 Low-loss shared FTTH distribution network  
A low-loss shared FTTH distribution network that enables optical communications within a subscriber area, including optical fibers routed from a point of distribution to the subscriber area, a tap...
7257327 Wireless communication system with high efficiency/high power optical source  
An optical communication system is provided which includes an optical signal transmitter which communicates high bandwidth, high power frequencies. The optical signal transmitter includes a high...
7254330 Single fiber passive optical network wavelength division multiplex overlay  
A single fiber passive optical network (PON) wavelength division multiplex (WDM) overlay includes a central office, a fiber optic network, and a plurality of optical network termination (ONT)...
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...
7242868 System and method for performing high-speed communications over fiber optical networks  
Processing a received optical signal in an optical communication network includes equalizing a received optical signal to provide an equalized signal, demodulating the equalized signal according to...
7239808 Subscriber interfacing device in communication-broadcasting convergence FTTH  
A subscriber interface device and method for transmitting a communication signal and a broadcasting signal to each subscriber in a communication-broadcasting convergence FTTH system. A subscriber...
7236706 Free space optics communication apparatus and free space optics communication system  
A free space optics communication apparatus is provided which allows flexible setting in accordance with the number or distances of other apparatuses in single-to-multipoint communication. The...
7218855 System and method for communicating optical signals to multiple subscribers having various bandwidth demands connected to the same optical waveguide  
The present invention is generally drawn to optical network architecture that can include a multi-subscriber optical interface that can service a plurality of subscribers that are located in close...
7209667 Methods of connecting and testing interfaces for CWDM fiber-optic systems  
The invention concerns a method of connecting a subscriber unit ( 12 ) to a fiberoptic communication network ( 14 ) via a fiberoptic interface device ( 30 ) adapted to function as an interface...
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...
7197246 Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer  
The first present invention provides an optical switch including the following elements. At least a plurality of optical transmission lines are provided for transmissions of optical signals. Each...
7190903 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...
7190901 Method and system for providing a return path for signals generated by legacy terminals in an optical network  
A return path system includes inserting RF packets between regular upstream data packets, where the data packets are generated by communication devices such as a computer or internet telephone. The...
7184669 Optical transceiver systems and methods  
Optical systems are provided. A representative optical system includes an optical transceiver with an optical source and an optical receiver. The system also includes an optical waveguide. At least...
7184664 Method and system for providing a return path for signals generated by legacy terminals in an optical network  
A return path system includes inserting RF packets between regular upstream data packets, where the data packets are generated by communication devices such as a computer or internet telephone. The...
Matches 1 - 50 out of 142 1 2 3 >