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7639949 TDM PON and dynamic bandwidth allocation method thereof  
A TDM PON including: an optical line terminal; a remote node including multiple secondary optical distributors connected to multiple optical network units; and the multiple optical network units...
7639946 Distribution node for an optical network  
A distribution node for an optical network is provided that includes an integrated filter module comprising a first thin-film and a second thin-film coupled to a common substrate and operable to...
7630639 Method and apparatus for transmission control in an ethernet passive optical network  
One embodiment of the present invention provides a system that facilitates transmission control in an Ethernet passive optical network, which includes a central node and at least one remote node,...
7630637 PON system and optical network unit  
Provided is an ONU that suppresses transmission of a useless multicast control message to a PON section and enables a communication bandwidth of the PON section to be effectively used. The ONU of...
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...
7623786 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...
7616892 Delivery method and delivery system of contents information, and central station thereof  
A contents information delivery method for delivering a desired contents information by transmitting an optical signal from a central station to each of a plurality of user stations via a...
7616890 System, device and method of expanding the operational bandwidth of a communication infrastructure  
Embodiments of the invention include a method, device an/or system of expanding the operational bandwidth of a communication infrastructure. An optical gathering box may include, according to some...
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...
7609966 Method and system for time-sharing transmission frequencies in an optical network  
An optical communication system includes an optical ring that couples a hub node and a plurality of local nodes. The hub node is capable of receiving traffic over the optical ring from the...
7606490 Adaptive preamble adjustment for burst-mode optical systems  
In an optical data network, such as a passive optical network (PON), an optical line terminator (OLT) measures the strengths of one or more signals received from the optical network units (ONUs)...
7606489 System control and management of passive optical networks  
A highly reliable, carrier class passive optical network and associated devices which employs multiple instances of operating software in host systems, as well as mechanisms to automatically...
7606492 System and method for communicating optical signals upstream and downstream between a data service provider and subscribers  
An optical fiber network can include an outdoor bandwidth transforming node that can be positioned in close proximity to the subscribers of an optical fiber network. The outdoor bandwidth...
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...
7599623 Apparatus and method of managing POTS lines in a PON network  
An apparatus or corresponding method of managing Plain Old Telephone Service (POTS) lines in a Passive Optical Network (PON) to prevent an alarm system from generating an alarm during a software...
7599622 System and method for communicating optical signals between a data service provider and subscribers  
An optical fiber network can include an outdoor laser transceiver node that can be positioned in close proximity to the subscribers of an optical fiber network. The outdoor laser transceiver node...
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...
7596317 Long-reach wavelength division multiplexing passive optical networks by using the position adjustment of broadband light source  
An optical network system includes a central office (CO) comprising an A-band BLS to be injected into a light source for downstream signals, an A-band BLS coupling device for coupling the A-band...
7596319 Wavelength division multiplexing-passive optical network system  
A wavelength division multiplexing-passive optical network (WDM-PON) system includes a light source provider configured to wavelength-division-multiplex a laser light source of a wavelength...
7596801 Single wire return device in a fiber to the home system  
Systems and methods are disclosed for providing reverse signals from a plurality of DHCTs to a downstream modulator that is located in the headend facility. The present invention includes a single...
7593647 Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal  
An optical transmitter has a resonance wavelength characteristic that varies with the refractive index of the optical transmitter. The optical transmitter receives a narrow band injected wavelength...
7593639 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...
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...
7583897 Optical network system and method for supporting upstream signals propagated according to a cable modem protocol  
A modification to a cable modem termination system (CMTS) can include instructing the CMTS to ignore or skip steps of its timing algorithm so that upstream cable modem signals are controlled only...
7583896 Optical-wireless hybrid transmission system and optical-wireless hybrid transmission method  
An optical transmitter of an optical-wireless hybrid transmission system according to the invention outputs a first single-mode optical signal (center frequency: f C1 ) to an optical receiver,...
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...
7558477 Communication recovering system for wavelength division multiplexed passive optical network  
A communication recovering system for a wavelength division multiplexed passive optical network (WDM PON). The communication recovering system can recover fault of optical fibers between the...
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...
7555228 Method and system for facilitating burst-mode optical power measurement  
An optical line termination comprises a DC current load, power measurement circuitry, upstream data path circuitry and current mirror circuitry. The current mirror circuitry is connected between...
7555215 Optical wavelength division multiplexing access system  
A dual structure for a multiplexing section extended to an OSU is obtained without adding a dynamic function, such as an optical switch, to a W-MULDEM. The W-MULDEM of an optical wavelength...
7551854 Method to provide caller's location in IP phone system, optical transmission system, optical connector, and optical network unit  
To inform a location of a caller to the other party in an IP phone system, a wireless IC tag preserving unique ID information is attached to an optical connector of a user connection port. The...
7546036 Hybrid passive optical network using shared wavelengths  
In accordance with the teachings of the present invention, a hybrid passive optical network using shared wavelengths is provided. In a particular embodiment, a system for communicating optical...
7529485 Method and system for supporting multiple services with a subscriber optical interface located outside a subscriber's premises  
A system and method for tuning a broadcast receiver such as a television set with a subscriber optical interface (SOI) that can be located outside a subscriber's premises and can be adjacent to the...
7522838 Distribution components for a wavelength-sharing network  
In accordance with the teachings of the present invention, distribution components for a wavelength-sharing network are provided. In a particular embodiment, a distribution node for an optical...
7519294 Method and apparatus for providing integrated symmetric and asymmetric network capacity on an optical network  
A symmetrical capacity network may be adapted to accommodate asymmetrical network traffic patterns by deploying Protected Dedicated Wavelengths (PDWs) between one or more head-end nodes and the...
7502563 WDM type passive optical network  
In a WDM type PON system, each ONU comprises an optical transmitter capable to transmit optical signals with variable wavelengths, an optical signal receiving filter variable its receiving...
7499651 Upgradeable passive optical network  
In accordance with the teachings of the present invention, an upgradeable passive optical network is provided. In a particular embodiment, an upgradeable optical network includes an upstream...
7493044 Methods and apparatus for transmitting data  
A method of transmitting data includes receiving a plurality of downstream wavelength streams from a first optical fiber, each wavelength stream corresponding to a separate downstream data...
7474852 System for communication of video, audio, data, control or other signals over fiber  
A system for communication of signals between remote devices and monitoring and control devices via fiber. The system in accordance with one aspect of the invention includes a plurality of remote...
7469102 Wavelength-division-multiplexing passive optical network utilizing fiber fault detectors and/or wavelength tracking components  
Various methods, systems, and apparatuses is described in which a passive-opticalnetwork includes a first multiplexer/demultiplexer, a second multiplexer/demultiplexer, a wavelength tracking...
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...
7460744 Ring type optical transmission system and optical apparatus connected to same  
In the ring type optical communication system of the present invention, in each OADM arranged on a ring network, an optical signal which has the same wavelength as the add wavelength assigned to a...
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...
7450848 High-speed fiber-to-the-premise optical communication system  
An optical communication system including a plurality of transceiver ports each including a transmitter configured to produce a downstream MLM-spectrum signal and a receiver configured to receive...
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...
7450849 Wavelength-division multiplexing passive optical network  
A wavelength-division multiplexing passive optical network (WDM-PON) comprising a central office for generating monitor light and multiplexed downstream optical signals to be out and detecting...
7447439 Optical duplexer and optical triplexer  
An optical triplexer design is described in which external optical signals at a first wavelength range propagate through a laser source. The laser source provides optical signals having a second...
7447435 Passive optical network  
Disclosed is a passive optical network comprising a central office including a plurality of first reflective semiconductor optical amplifiers of a quantum-dot type, each of which generates a...
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