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US20090324228 ONT TEST UNIT  
An Optical Network Terminal (ONT) simulator is provided. The ONT simulator includes one or more partially functional ONTs coupled to an Optical Line Termination (OLT) and an ONT/Optical network...
US20110116791 INSTANTANEOUS INTERRUPTION MONITORING SYSTEM AND INSTANTANEOUS INTERRUPTION MONITORING PROGRAM  
Provided are an instantaneous interruption monitoring system and an instantaneous interruption monitoring program for a computer incorporating a non-real time operating system (OS). Measurement...
US20140233944 OPTICAL NETWORK TERMINAL (ONT) WAVELENGTH TUNING AND CORREPSONDING CALIBRATION PROCEDURE  
Tuning an optical network unit (ONU) to an appropriate communication wavelength may be performed by initiating an activation procedure responsive to receiving a wavelength configuration message,...
US20080298812 NETWORK REPEATER, REPEATER CONTROLLING METHOD AND PROGRAM PRODUCT  
A bridge controller, which controls relay between terminals including emission units and addresses assigned to the terminals, acquires coordinates of a light-received element in an light receiving...
US20060098828 NETWORK PHONE ADAPTER CAPABLE OF UTILIZING A NORMAL PHONE TO SERVE AS A MICROPHONE AND A SPEAKER  
A phone adaptor capable of utilizing a normal phone to serve as a speaker and a microphone of an electronic device. The phone adaptor includes a speaker driving circuit electrically connected to...
US20120093503 DYNAMICALLY OPTIMIZING A DECISION THRESHOLD VOLTAGE IN AN OPTICAL TRANSPONDER  
A transponder having a dynamic remapping circuit remaps a value of decision threshold voltage Vdtc and a value of optical power RXP to a reference voltage Vref to minimize the bit error rate BER of...
US20140226984 TRANSPARENT CLOCK FOR PRECISION TIMING DISTRIBUTION  
One or more devices of a network having asymmetric delay are configured to participate in time synchronization protocol sessions in which a client device synchronizes its local clock to a master...
US20080205892 Underwater Optical Communications System and Method  
An underwater optical communications system and method particularly suitable for use in communications with automated equipment. A series of light beacons are dispersed throughout a communications...
US20090232499 Passive optical network communication method and system  
A passive optical network communication system transmits an optical time-division multiplexed signal from a central office through a passive optical coupler to a number of subscribers, and...
US20070212080 Infrared Receiving Unit and Infrared Headphone/Hearing Aid  
There is provided an infrared receiving unit which has an infrared receiver for receiving infrared signals and a transmitter search facility for carrying out an infrared transmitter search. Such an...
US20120163817 CONNECTION MANAGEMENT SERVER, OLT, ONU/ONT AND THE SYSTEM AND METHOD FOR PROVIDING ETHERNET-BASED PTL-PON  
Provided is a passive optical network (PON) providing system of an Ethernet-based packet transport layer (PTL) scheme, including: a connection management server to manage a unified PTL connection...
US20130108267 Methods for Expanding Cross-Connect Capacity in a ROADM Optical Network  
A reconfigurable optical add-drop multiplexer (ROADM) transport network comprising a plurality of optical fan-out devices and a first plurality and a second plurality of demultiplexers for locally...
US20110076016 Methods for Expanding Cross-Connect Capacity in a ROADM Optical Network  
A reconfigurable optical add-drop multiplexer (ROADM) transport network comprising a plurality of optical fan-out devices and a first plurality and a second plurality of demultiplexers for locally...
US20100296809 METHOD AND APPARATUS FOR SERVICE PROTECTION  
A method and apparatus for realizing service protection are provided. The method includes the following steps: determining paths corresponding to automatic protection switching (APS)/protection...
US20140010548 SECTORIZATION IN DISTRIBUTED ANTENNA SYSTEMS, AND RELATED COMPONENTS AND METHODS  
Distributed antenna systems in which the distributed antenna systems can be sectorized. Radio bands distributed by the distributed antenna systems are allocated to one or more sectors. The antenna...
US20110206373 STATION SIDE DEVICE AND OPTICAL COMMUNICATION SYSTEM  
In multicast transfer in a PON system, in order to reduce the possibility that an OLT 2 has failed in getting some report messages from terminal devices 6 because of lack of its processing...
US20080107420 OPTICAL WIRELESS TRANSMISSION SYSTEM FOR PERFORMING OPTICAL SPACE TRANSMISSION, AND OPTICAL TRANSMITTER USED THEREIN  
An optical transmitter for performing high-rate data communication by means of optical space transmission is provided, which can reliably perform optical axis adjustment manually and visually, and...
US20120099860 METHOD AND EQUIPMENT FOR OPERATING A COHERENT OPTICAL PACKET RECEIVER  
The present invention refers to a method for operating a coherent optical packet receiver comprising at least one linear physical impairment compensation filter wherein the settings of at least one...
US20110279660 IR RECEIVER, AND LIQUID CRYSTAL SHUTTER GLASSES HAVING THE SAME  
There are provided an IR receiver and liquid crystal shutter glasses with the same, and more particularly, an IR receiver and liquid crystal shutter glasses having the same to solve the problem in...
US20140169790 MAGNETO-OPTICAL LOGIC DEVICES AND COMPUTATION  
Disclosed is a method and apparatus for optical computing using magneto-optical elements as logic devices. Essential logic and computing elements have been implemented.
US20060127104 Control system for a polar optical transmitter  
A method of controlling a polar optical transmitter comprising a dual-branch Mach-Zehnder (MZ) modulator driven by a pair of independent electrical drive signals. A cost function is provided which...
US20100040241 HEALTHCARE INDUSTRY WIRELESS AUDIO SYSTEMS  
Healthcare industry wireless audio systems include a wireless signal transmitter. The wireless signal transmitter generates wireless signals along a first path and a second path. Wireless audio...
US20070145271 Quantum information conversion between matter and light representations  
Structures and methods allow: transfer of quantum information represented using the states of light to a representation using the states of matter systems; transfer of quantum information...
US20080138064 OPTICAL NETWORK TERMINAL AGENT  
A method is provided including the steps of monitoring at least one performance metric of at least one network component in an optical network system, determining whether the at least one network...
US20110280578 PASSIVE OPTICAL NETWORK, ACCESS METHOD THEREOF, OPTICAL NETWORK UNIT AND OPTICAL LINE TERMINATION  
A method for accessing a Passive Optical Network (PON) is disclosed. The method includes: obtaining a first distance parameter of an Optical Network Unit (ONU), where the first distance parameter...
US20060210283 TRANSMITTERS FOR INVERSELY DISPERSED OPTICAL SIGNALS  
Transmitters for generating inversely dispersed optical signals to counter chromatic dispersion in optical fibers carrying the optical signals are presented. The transmitters have optical pulse...
US20130039644 OPTICAL NETWORK APPARATUS  
There is provided an optical network apparatus included in an optical network in which alarm information including a type and a position of a generated failure is transferred, the optical network...
US20110123190 Connection Loss Scheme for Fiber Connections in Optical Communication System  
A method includes outputting an optical signal from an optical transmitter; causing the optical signal to propagate through equipment of an optical communication site and to loop back to an optical...
US20140205296 METHOD FOR SPLIT SPECTRUM SIGNALLING IN AN OPTICAL NETWORK  
The example embodiments presented herein are directed towards an Optical Network Element, ONE, node (14), and corresponding method therein, for establishing multiple spectral routing in an optical...
US20050258976 Household digital automation control system  
The present invention provides a digital household automation control system, which utilizes a relay transmitter processing the RF signal emitted out from an actuating input apparatus in converting...
US20050259994 Optical transceiver module having improved printed circuit board  
An optical transceiver module includes a first Printed Circuit Board having a first function circuit connected with the electrical interface and a second Printed Circuit Board having a second...
US20140133858 Method and Apparatus of Managing Bandwidth Allocation for Upstream Transmission in a Unified Optical-Coaxial Network  
A method of allocating bandwidth in a network comprising receiving a GATE message allocating a transmission time window in an optical portion of the network to a coaxial network unit (CNU) in a...
US20130156428 System and Method for Impairment-Aware Routing and Wavelength Assignment in Wavelength Switched Optical Networks  
An apparatus comprising a path computation element (PCE) configured for at least partial impairment aware routing and wavelength assignment (RWA) and to communicate with a path computation client...
US20070122159 PASSIVE OPTICAL NETWORK MEDIA ACCESS CONTROLLER ASSISTED CLOCK RECOVERY  
A system, method, and computer readable medium for passive optical network media access controller assisted clock recovery which enables an optical receiver to recover a clock phase of an incoming...
US20090257742 Joint IP/optical layer restoration after a router failure  
A method and system for providing joint IP/Optical Layer restoration mechanisms for the IP over Optical Layer architecture, particularly for protecting against router failure within such...
US20090202253 Optically isolated analog audio circuits  
An Audio circuit configured to receive an analog audio signal. The audio circuit includes an optical isolator having a LED configured to emit light modulated by the analog audio signal over a...
US20080232819 Pon System and Optical Network Unit Connecting Method  
In a passive optical network system, upon detecting a connection with one of a plurality of optical network units at the time of performing autonomous ranging, an optical line termination requests...
US20060029389 Optical network terminal with low power hibernation  
The invention is directed to techniques for reducing power consumption by an optical network transmitter (ONT) in a passive optical network (PON). The techniques may be particularly useful in...
US20110270960 METHOD AND SYSTEM FOR ANNOUNCING TRAFFIC ENGINEERING PARAMETERS OF COMPOSITE TRANSPORT GROUPS  
An approach is provided for announcing aggregate characteristics of a composite transport group (CTG) for traffic engineering. Information specifying characteristics of a plurality of component...
US20130051788 PATH DISCOVERY IN A COMMUNICATIONS NETWORK  
The invention relates to discovering a path in a communications network. Embodiments of the invention disclose determining whether at least two server trail termination points (TTPs) of the path...
US20120189310 BANDWIDTH ADJUSTABLE BANDPASS FILTER  
An apparatus comprising a Mache-Zehnder interferometer. The Mache-Zehnder interferometer comprises: a 1×2 optical splitter having an optical input, a 2×2 optical coupler having first and second o...
US20120099867 WAVELENGTH MULTIPLEXING OPTICAL COMMUNICATION DEVICE AND OPTICAL DISPERSION COMPENSATION METHOD  
A wavelength multiplexing optical communication device having an optical dispersion-compensating function compensating for waveform variation of an optical signal due to optical dispersion of a...
US20120020668 Method And An Interconnecting Node For Use In An Access Network  
The invention relates to an interconnecting node for use in interconnecting a passive optical network (PON) and a copper wire xDSL access network, wherein said interconnecting node comprises an...
US20110211835 System and Method for Mitigating Polarization Hole Burning  
A system for mitigating the effects of polarization hole burning in an optical communication system. The system includes an optical input signal comprising one or more traffic channels, a...
US20140294390 METHOD AND APPARATUS FOR PROTECTING FIBER OPTIC DISTRIBUTION SYSTEMS  
A fiber optic network has alarmed fiber optic lines in the cables connecting a secured junction box to plural user lock boxes. An outgoing alarm line and return alarm line in each cable connect the...
US20130315604 MOBILE BI-DIRECTIONAL FREE-SPACE OPTICAL NETWORK  
The system provides a mobile, full bi-directional, free-space optical (FSO) network providing networkability and internet connectivity. Each mobile system has a FSO transceiver communicating via...
US20100098422 OPTICAL COMMUNICATION APPARATUS AND METHOD OF CONTROLLING SEMICONDUCTOR OPTICAL AMPLIFIER  
An optical communication system and method thereof include outputting a wavelength division multiplexed (WDM) light to a transmission line, the WDM light being multiplexed from a plurality of...
US20080285979 HIGH-SPEED OPTICAL COMMUNICATION  
A high-speed optical communication system for transmitting and receiving an optical signal is disclosed. A contents receiver transmits previously given unique identification information by using a...
US20090022493 PON equipment capablel of displaying connection state and logical link identifier  
A passive optical network (PON) equipment capable of displaying a connection state and a logical link identifier (LLID) is provided, which aims at solving a problem that equipments in the...
US20140099102 SYSTEMS AND METHODS FOR STATISTICAL SHARING IN OPTICAL COMMUNICATIONS NETWORKS  
A method of statistical sharing in an optical communications network is disclosed. The method includes identifying a peak transmission rate and a base transmission rate for each of a plurality of...