Matches 1 - 45 out of 45


Match Document Document Title
US20060228113 Passive optical network unit management and control interface support for a digital subscriber line network  
An optical network unit for managing digital subscriber line (√óDSL) connections to a passive optical network. According to one embodiment, the optical network unit comprises data structures in the...
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...
US20060067691 Communication system  
A communication system is provided for preventing delivery of unnecessary packets to a user terminal and thereby improving transmission efficiency. In the communication system, an OLT...
US20080279555 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...
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...
US20060159457 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...
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...
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...
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...
US20060045524 Optical access network of wavelength division method and passive optical network using the same  
An optical access network of wavelength division method and passive optical network using the same are disclosed. The wavelength division multiplexed optical access network includes a central...
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...
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....
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...
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...
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...
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...
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...
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...
US20080031625 WDM hybrid splitter module  
A downlink signal and WDM-PON signal from an OLT 1 are separated by an optical filter part 11 , and a downlink signal is split by a power splitter part 12 . A WDM-PON signal is also split in each...
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...
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...
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...
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...
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...
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...
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...
US20050158049 Wavelength division multiplexed passive optical network  
A wavelength division multiplexed passive optical network (WDM PON) is disclosed. In one aspect, WDM-PON comprises a central office comprising a plurality of semiconductor optical amplifiers each...
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...
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...
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...
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...
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...
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...
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...
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...
US20060291861 WDM PON with interleaver  
A WDM PON includes: a CO for transmitting downstream optical signals; a RN for distributing the downstream optical signals received from the CO; and a SUB for receiving the distributed downstream...
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...
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...
US20060147210 Wavelength-division-multiplexed passive optical network  
A broadband light source includes: at least two semiconductor optical active devices for generating TE polarized lights of different wavelength bands; an optical coupler for dividing each of the...
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....
US20070297800 Wavelength Division Multiplexing Passive Optical Network System  
The present invention relates to a Wavelength Division Multiplexing (WDM) Passive Optical Network (PON) system and a multi-ring type WDM PON system. The WDM PON system is implemented to...
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...
US20160294473 METHODS FOR REDUCING OPTICAL BEAT INTERFERENCE BY CONTINUOUSLY VARYING LASER TEMPERATURES AND RELATED OPTICAL NETWORK UNITS  
Methods of reducing optical beat interference are disclosed in which an output of a first temperature control system that establishes an operating temperature of a first laser that is included in...
US20080166125 Method for Establishing a Subscriber Connection and a System Utilizing the Method  
A method and a system for establishing a digital subscriber connection between a central site (1) and a subscriber's transmission device (5). The system comprises an optical fiber (2) between the...
US20060188259 HDSL optical fiber transmission system and method  
A method and system for a telecommunications isolator link using optical fibers that will work for whichever of HDSL 1, or 4 or HDSL 2 is being used. A feature of the link is that identical...

Matches 1 - 45 out of 45