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US20070036547 FTTP IP video overlay  
A video overlay system for a Fiber to the Premises (FTTP) optical network. The video overlay is achieved by including a video router with a gigabit Ethernet interface including Internet Group...
US20100040372 WIRELESS OVER PON  
A system for communicating wireless signals includes a passive optical network (PON) between a central office (CO) and network subscribers. The CO has an optical line terminal (OLT) and a wireless...
US20070116466 Optical network unit (ONU) circuit  
An optical network unit (ONU) circuit that combines both analog and digital components is provided. The ONU circuit enhances the monitoring and diagnostic of the ONU optical interface, and thus...
US20070147836 Passive Optical Network Maintenance Method, an Optical Network Unit, and an Optical Line Terminal  
The present disclosure relates to a passive optical network (PON) and provides a method for maintaining the PON, the optical network unit (ONU), and the optical line terminal (OLT) to solve the...
US20080019693 Open access service model using WDM-PON  
Methods and apparatuses to provide an “Open access” service model using wavelength division multiplexing (“WDM”) passive optical networks (“PONs”) are described. A cross-connect is used to supply...
US20070147835 Device and method for controlling optical transmitters in WDM-PON system  
A method for controlling optical transmitters in a Wavelength Division Multiplexed (WDM)-Passive Optical Network (PON) system includes the steps of: determining the existence of an upward optical...
US20060002706 Optical access network using wavelength-locked WDM optical source injected by incoherent light  
The present invention relates to a passive optical network, which inexpensively improves the spectral efficiency of an access network and is capable of increasing the number of subscribers per...
US20060171714 Electrically shared passive optical network  
An optical line terminal (OLT) includes a media access controller (MAC) that has a transmit bus coupled to several optical transceivers by one or more electrical splitters. Each optical...
US20070242954 System and method for monitoring transmissions within a passive optical network  
A device is provided for monitoring a passive optical network (PON) having optical network terminations (ONTs) joined to an optical distribution network (ODN). The device comprises an optical line...
US20050276603 Self-monitoring passive optical network  
A passive optical network is disclosed. The network includes a plurality of subscriber units that generate upstream optical signals, respectively, reflect channels applied thereto in association...
US20070014574 Optical communication system having optical amplification function  
In optical communications between a base station and a local station, the wavelength of a laser light source for a signal, high LD, in the base station that generates downstream signal light is...
US20140064731 FIBER OPTIC TERMINALS, SYSTEMS, AND METHODS FOR NETWORK SERVICE MANAGEMENT  
Fiber optic terminals, systems, and methods for providing differentiated network services to subscribers of a fiber optic network are disclosed. In certain embodiments, fiber optic terminals and...
US20080232804 PON WITH PROTECTED CROSS-CONNECT FORWARDING  
Redundancy is provided in a passive optical network (PON) to protect against network malfunctions or provide other benefits. The Optical Line Terminal (OLT) that couples an external network to the...
US20070025734 PON system and logical link allocation method  
A PON (Passive Optical Network) system, which is installed in an access network for connecting a user terminal to a network and can improve the utilization efficiency of the network, is provided....
US20090097845 NETWORK TERMINATION APPARATUS  
Apparatus for connecting telecommunications equipment of premises to a telecommunications network, the apparatus comprising a first module associated with the telecommunications equipment, a...
US20110097086 Optical Broadcast Systems And Methods  
Embodiments of the present invention are directed to optical broadcast systems (100,140,160,180). The nodes of the system can be any combination of cores, caches, input/output devices, and memory,...
US20060153565 Hybrid passive optical network  
A hybrid passive optical network (PON) includes a central office (CO) for multiplexing at least one downstream optical signal for broadcasting and a plurality of downstream optical signals for...
US20100086304 OPTICAL COMMUNICATION SYSTEM  
A transmitting apparatus includes a plurality of code spreaders different in spreading code, a reception processing unit that selectively distributes transmission data to the plurality of code...
US20060045525 Optical access network of wavelength division method and passive optical network using the same  
A wavelength division multiplexed optical access network including a central office for multiplexing first optical signals used for transmitting a high-speed wire data service to a subscriber side...
US20060165412 Self-healing passive optical network  
Disclosed is a self-healing passive optical network comprising: a station, such as a central office, for outputting first and second multiplexed downstream optical signals to first and second...
US20070264016 Method and apparatus for rogue tolerant ranging and detection  
A fault condition of a continuous stream of light up a shared fiber from an Optical Network Terminal (ONT) to an Optical Line Terminal (OLT) may adversely affect ranging of the ONT by the OLT. A...
US20050232632 Optical LAN device and state monitoring method for load devices  
Optical fiber cables interconnect a master node and a plurality of slave nodes to configure a network. A master controller transmits instruction signals each corresponding to one of the slave...
US20070258713 SUBCARRIER MULTIPLEXING TYPE OPTICAL COMMUNICATION METHOD AND PASSIVE OPTICAL NETWORK USING THE SAME  
Disclosed is a subcarrier multiplexing type optical communication method including the steps of receiving a first optical signal composed of a plurality of subcarrier channels having different...
US20070189772 Hybrid passive optical network using wireless communication  
Provided is a hybrid Passive Optical Network (PON) using a wireless communication. The hybrid PON includes a Central Office (CO) for transmitting downstream optical signals, a Remote Node (RN) for...
US20060210271 Station-side apparatus in optical communication  
A multiplexing/demultiplexing unit demultiplexes an input light according to a wavelength, and multiplexes a plurality of wavelength components from a plurality of semiconductor optical amplifiers...
US20060093359 Loop-back wavelength division multiplexing passive optical network  
Disclosed herein is an apparatus and method for managing faults of a loop-back Wavelength Division Multiplexing Passive Optical Network (WDM-PON). The apparatus includes a control light source as...
US20070122152 Method and apparatus for increasing downstream bandwidth of a passive optical network using integrated WDM/power spitting devices and tunable lasers  
Methods and apparatus are disclosed for increasing downstream bandwidth of a passive optical network using integrated WDM/power spitting devices, such as the 2P1 devices, and one or more tunable...
US20050019035 Data communications system, station device, subscriber device, redundant configuration switch determination method, operation control method, and program therefor  
A data communications system switches systems without using an OpS. An OLT determines one of ONTs forming a redundant configuration as a current ONT by performing ranging on the ONTs. When a fault...
US20060177223 Wavelength division multiplexing-passive optical network  
A passive optical network includes a central office generating multiplexed downstream optical signals, a plurality of subscriber units provided with the downstream optical signals of the...
US20060239682 Time and wavelength division multiplexed passive optical network  
A time and wavelength division multiplexed passive optical network where a central office has a downstream transmitter and an upstream receiver. The downstream transmitter multiplexes and...
US20070280691 System and Method for Transmitting Traffic in a Plurality of Passive Optical Networks  
In accordance with the teachings of the present invention, a system and method for transmitting traffic in a plurality of passive optical networks (PONs) is provided. In a particular embodiment, a...
US20060239683 Wavelength-division-multiplexed passive optical network  
Disclosed is a wavelength-division-multiplexed (WDM) passive optical network which comprises an optical network unit (ONU) for receiving and transmitting an optical communication service; a remote...
US20060093360 Loop-back wavelength division multiplexing passive optical network  
Disclosed herein is a loop-back Wavelength Division Multiplexing Passive Optical network (WDM-PON). The loop-back WDM-PON includes a coupler, a terminal receiver, and a reflective semiconductor...
US20060045526 Optical communication system  
The present invention relates to an optical communication system of a structure permitting the communication carrier side to select a delivery service content to be finally provided from a...
US20060275038 Methods and apparatus for selective signal amplification  
A module for use in a passive optical network including a single coil of erbium and a passive optical splitter, whereby digital and analog signals pass through the module from a central...
US20150023665 DYNAMIC CONTROL OF OPTICAL ATTENUATORS TO ENABLE IP MULTICAST  
Methods and systems for distributing multicast signals carried by an incoming light wave are disclosed. According to one aspect, the invention provides a method of controlling an optical device....
US20080056719 Method and apparatus for enabling an optical network terminal in a passive optical network  
A method and corresponding apparatus for automatically enabling and disabling an Optical Network Terminal (ONT) to communicate upstream with a network device, such as an Optical Line Terminal...
US20140177657 Optical Fiber Transmission System  
An optical fiber transmission system adapted to provide a remote passive identification of components deployed in said transmission system, wherein each component comprises an associated passive...
US20070274722 Method of Communicating for a Communication Apparatus  
A method of communicating for a communication apparatus, which includes: a terminal apparatus transmitting the information frames to a central office apparatus; the central office apparatus...
US20070077068 Time and wavelength-shifted dynamic bidirectional system  
A bidirectional optical network, in which an incoming/downstream modulated optical signal(s) of a particular wavelength may carry content from a headend to a subscriber. An incoming/downstream...
US20080002977 Multi-bit-rate optical communication method, optical network unit, and optical line terminal  
The present invention relates to a multi-bit-rate optical communication method, optical network units, and an optical line terminal that enable multi-bit-rate transmission of low bit-rate data and...
US20050163508 Wavelength division multiplexed passive optical network  
A wavelength division multiplexed passive optical network (WDM PON) includes a central office that has: a broadband light source, a first wavelength division multiplexer to spectrum-slice light...
US20060275037 Methods and apparatus for multiple signal amplification  
An apparatus for multiple signal amplification in a passive optical network, includes a remotely-pumped, single erbium coil positioned intermediate a central office and a split point in the...
US20070140694 Burst data reception method and apparatus in EPON  
A method and apparatus for receiving burst data in an OLT of an EPON are provided. The method includes the steps of: a) receiving burst data from the plurality of ONUs; b) generating a multipoint...
US20100061729 Method and system for optical transmission  
A system and method for optical transmission that provides an efficient manner of increasing transmission capacity, especially in the downstream direction, with minimal changes to existing...
US20060165413 DWDM CATV return system with up-converters to prevent fiber crosstalk  
A hybrid fiber cable network includes multiple nodes, each of which receives a first multi-carrier return signal from multiple customers with carrier signals in a first frequency band. In a...
US20070154216 Wavelength tracking apparatus and method in WDM-PON system  
Provided are an apparatus and method for tracking a wavelength in a passive optical subscriber network in which a central base station and at least one subscriber terminal are connected via a...
US20070230957 Station-side apparatus of wavelength multiplexing PON system, wavelength and network address allotting method and program thereof  
To achieve a station-side apparatus of a wavelength multiplexing PON system, which is capable of saving the wavelength resource through automatically carrying out allotment of the wavelength and...
US20100158525 MODULAR NETWORK TERMINALS AND METHODS TO USE THE SAME  
Example modular optical network terminals (ONTs) and methods to implement the same are disclosed. A disclosed example ONT includes a base unit having an integral optical interface to optically...
US20130272708 SUBSCRIBER-SIDE OPTICAL COMMUNICATION DEVICE, COMMUNICATION SYSTEM, CONTROL DEVICE, AND POWER-SAVING CONTROL METHOD  
An ONU includes a CDR that regenerates a clock based on a signal from an OLT, an oscillator that generates an internal clock, a time stamp counter that manages a time of the ONU based on the clock...

Matches 1 - 50 out of 59 1 2 >