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US20130114955 Method and System for Testing Jitter Compatibility  
A method and system for testing jitter compatibility are disclosed in the present invention, which includes: an interconnection testing board configured with a non-NRZ optical transponder needing...
US20140193147 System for Testing Passive Optical Lines  
An optical splitter assembly including a splitter housing, a passive optical power splitter positioned within the splitter housing and a plurality of splitter output pigtails that extend outwardly...
US20110268438 UNIDIRECTIONAL ABSOLUTE OPTICAL ATTENUATION MEASUREMENT WITH OTDR  
Devices and methods for optical measurements in point-to-point and point-to-multipoint networks, e.g. like PON networks with splitters are described in which reflected power from some known...
US20120020659 Polarization Monitoring in Polarization Division Multiplexing in Optical Communications  
Systems and techniques for optical communications based on polarization division multiplexing are described.
US20100014854 TESTING AN OPTICAL NETWORK  
The present invention relates to testing a passive optical network having a head end and a plurality of terminals, which terminals are connected to the network at a respective plug and socket...
US20140016926 SYSTEM AND METHOD FOR PERFORMING IN-SERVICE OPTICAL NETWORK CERTIFICATION  
A system and method for performing an in-service optical time domain reflectometry test, an in-service insertion loss test, and an in-service optical frequency domain reflectometry test using a...
US20120177364 METHOD AND APPARATUS FOR AUTOMATIC DISCOVERY IN OPTICAL TRANSPORT NETWORKS  
In order to improve the link adjacency discovery in an Optical Transport Network, a method and related network nodes are provided. A first network node (21) has a first discovery agent (216) and a...
US20140072306 OPTICAL SERVICE CHANNEL SYSTEMS AND METHODS OVER HIGH LOSS LINKS  
Optical service channel (OSC) systems and methods over high loss links are described utilizing redundant telemetry channels. A first telemetry channel provides a low bandwidth communication...
US20080159737 TRANSCEIVERS FOR TESTING NETWORKS AND ADAPTING TO DEVICE CHANGES  
Test transceivers are disclosed for testing optical networks. The test transceivers generate one or more errors on a network in a specific, reproducible way, thereby enabling a tester to easily...
US20080219660 Communicating Information  
The present invention relates to the communication of information where the information is introduced at a plurality of spaced apart locations onto an optical waveguide. The following steps are...
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...
US20120207467 Path Computation Element System and Method of Routing and Wavelength Assignment in a Wavelength Switched Optical Network  
The disclosure includes an apparatus comprising a path computation element (PCE) that manages the processes of routing in an optical network, wherein the PCE receives a path computation request...
US20090097843 Optical Phase Modulator With Monitoring Structure  
The invention relates to an optical waveguide device that includes a waveguide phase modulator (WPM). A waveguide monitoring structure is coupled optically in parallel with the WPM so as to form a...
US20110293265 Optical Access Network, Secondary Network Side Termination Node of an Optical Access Network, and Method for Operating a Network Side Termination Node  
An optical access network has a first and a second network-side termination node, the first including a first transceiver arrangement connected to a first optical link, configured to send a first...
US20140119723 OPTICAL MODULE AND DETECTION CIRCUIT THEREOF  
The present invention discloses an optical module and a detection circuit thereof. The detection circuit includes: a sampling module, including a first potentiometer configured to convert a...
US20100098413 PERFORMANCE MONITORING IN PASSIVE OPTICAL NETWORKS  
One embodiment provides a system for performance monitoring in a passive optic network (PON). The system includes an optical line terminal (OLT) and an optical network unit (ONU). The OLT includes...
US20090252491 SENSING A DISTURBANCE  
The present invention relates to a system for sensing of a disturbance on an optical link. Data traffic from an optical source with a short coherence length is transmitted along the link to a...
US20150200728 SCHEME FOR REMOTE CONTROL OF THE OUTPUT POWER OF A TRANSMITTER IN A SMART SFP TRANSCEIVER  
A scheme is described for remote control of the output power of a transmitter in a smart SFP (or SFP+, or XFP) duplex (or BiDi, or SWBiDi) transceiver in a communication system using an operating...
US20100086298 ENFORCED ROUTING IN SWITCHED NETWORK FOR FRU VERIFICATION  
A method implemented in a computer infrastructure having computer executable code having programming instructions tangibly embodied on a computer readable medium. The programming instructions are...
US20150093106 CONNECTION MAPPING IN DISTRIBUTED COMMUNICATION SYSTEMS  
Power management techniques in distributed communication systems are disclosed. Related components, systems, and methods are also disclosed. In embodiments disclosed herein, the power available at...
US20140255021 OPTICAL CABLE TESTING AND MANAGEMENT  
A method and apparatus for testing an optical cable is provided. In one embodiment, the apparatus may include a receiver for receiving a received pulse train through the optical cable. The...
US20130322869 Passive Optical Fiber Plant Analysis  
In a first aspect, the method and apparatus of the present disclosure can be used to periodically and/or intermittently place one or more ONUs attached to a PON in a power savings mode so that an...
US20140341563 PROCESS CONTROLLER WITH INTEGRATED OPTICAL SENSING  
The present disclosure relates generally to a process controller and more specifically to a process controller with integrated optical sensing.
US20150104167 DETERMINING PROPERTIES OF AN OPTICAL COMMUNICATIONS PATH IN AN OPTICAL COMMUNICATIONS NETWORK  
A method of determining properties of an optical communications path between a first optical network node (A) and a second optical network node (B) determines, at the second optical network node...
US20080205883 Device For Measuring the Profile of Very Short Single Pulses  
The invention relates to a device for measuring the profile of single optical pulses, comprising: means (1, F) for creating a series of replica pulses (Ri) of the initial optical pulse, starting...
US20090028550 System and Method Using Differential Loop Gain for Fault Identification in Line Monitoring Equipment  
A system and method using differential loop gain for fault analysis in line monitoring equipment. Differential loop gain data is calculated from loop gain data, and fault analysis is conducted...
US20090060495 INITIATING DIAGNOSTICS FROM ANY USER COMMUNICATION TERMINAL  
A method for initiating diagnostic operations for a communication network, and devices, a network, and computer-readable storage medium storing control logic, that operate in accordance with the...
US20080310837 Passive Optical Test Termination  
An optical test termination device (100) for use in optical network comprising a passive optical element (102) and a first optical coupler (104) and a second optical coupler (106) for coupling the...
US20050213965 Communications testing apparatus and method of use  
A tester for testing components of a communication system, such as an optical communication system is disclosed. The tester may utilize a testing method to test a communication component (e.g. a...
US20080226289 Optical device testing  
In one embodiment, an apparatus comprises a pattern generator to generate a test bit pattern in an electrical signal, an optical transponder to covert the electrical signal to an optical signal,...
US20090074155 METHODS AND APPARATUS TO TEST A SUBSCRIBER LINE FOR A BROADBAND ACCESS SERVICE  
Methods and apparatus to test a subscriber line for a broadband access service are disclosed. An example network interface device (NID) comprises a tone generator to transmit a tone on a...
US20090123147 Test Instrument For Testing Multi-Wavelength Optical Networks Using Two Or More Tunable Lasers  
The present invention relates to test equipment (e.g. TBERD 8000) with two or more Tunable Lasers (TL) for testing the complete spectrum of a DWDM system. Diagnostic software is used to stepwise...
US20060198634 Passive optical network loss test apparatus and method of use thereof  
An apparatus and methods for testing a passive optical network with regard to fiber connectivity and attenuation losses, and with regard to the proper operation of packet-based communication...
US20130330071 CHARACTERIZATION OF NON-ASE NOISE ON OPTICAL SIGNALS  
There is provided a method for determining a noise parameter characterizing an optical Signal-Under-Test (SUT) having a signal contribution, an Amplified Spontaneous Emission (ASE) noise...
US20140093233 OPTICAL LINK AUTO-SETTING  
A system includes two optical modules that perform auto-setting of the optical links between the optical modules. One optical module sends an optical signal with a test pattern to the other...
US20100183297 OPTICAL FIBER SENSOR HAVING ELECTRICAL CONNECTORS  
An optical fiber sensor has a sensor band of optical sensor fibers. The band is connected on both ends to a transmitter unit and a receiver unit, the transmitter unit feeding optical signals into...
US20070269208 Method for Detecting a Check-Back Signal in an Optical Transmission System  
The invention relates to a method for detecting a check-back signal in a transmission system for optical signals. According to said method, a constant proportion of the output in a defined...
US20090263123 FIBER NETWORK MONITORING  
This specification describes technologies relating to optical fiber network monitoring. A monitoring system is provided. The monitoring system includes a fiber network including a plurality of...
US20130108258 METHODS AND APPARATUS TO TEST A SUBSCRIBER LINE FOR A BROADBAND ACCESS SERVICE  
Methods and apparatus to test a subscriber line for a broadband access service are disclosed. An example network interface device (NID) comprises a tone generator to transmit a tone on a...
US20100092168 OPTICAL COHERENT RECEIVER, APPARATUS FOR AND METHOD OF MONITORING PERFORMANCE THEREOF  
The present invention relates to an optical coherent receiver and an apparatus for and a method of monitoring performance thereof. The apparatus for monitoring performance of the optical coherent...
US20150244455 CALCULATING TIME OFFSET  
A slave device sends a first test signal via a downlink optical waveguide to a master device and recording a first transmission time, receives the first test signal looped back by the master...
US20120224847 Quadrature Time Skew Detection for Coherent Optical Signals  
A method for detecting and measuring time skew in high-speed DP-QPSK coherent optical receivers is described.
US20140255022 OPTICAL NETWORK SWITCHING NODE IN MULTI-CHASSIS CLUSTER, OPTICAL BURST SYNCHRONIZATION METHOD, AND LINE CARD CHASSIS  
An embodiment of the present invention provides an optical burst synchronization method. A synchronization method includes: selecting a reference chassis, and transmitting, by an output port...
US20120057865 COMMUNICATION SYSTEM AND TIME SYNCHRONIZATION METHOD  
In a communication system using a PON, time synchronization of a slave device such as a base station is realized with respect to a master device such as an L2SW or the base station. Time...
US20090110390 Multimode Fiber Link Probe  
A link probe for multimode fibers in optical networks is provided. An optical test probe signal is sent over a multimode fiber of an optical network link and a receiver converts the optical signal...
US20120134665 Testing of Transmitters for Communication Links by Software Simulation of Reference Channel and/or Reference Receiver  
A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber...
US20130266307 DIAGNOSTIC PORT FOR INTER-SWITCH AND NODE LINK TESTING IN ELECTRICAL, OPTICAL AND REMOTE LOOPBACK MODES  
A diagnostic testing utility is used to perform single link diagnostics tests including an electrical loopback test, an optical loopback test, a link traffic test, and a link distance measurement...
US20150110484 IN-SERVICE MONITORING OF A FIBEROPTIC NETWORK  
An optical fiber breakage point may be located by coupling to the optical fiber an out-of-band optical test signal modulated at a periodic modulation pattern. A distance to the breakage point may...
US20150263804 OPTICAL FREQUENCY DOMAIN REFLECTOMETRY (OFDR) SYSTEM  
There is presented an optical frequency domain reflectometry (OFDR) system (100) comprising a first coupling point (15) arranged for splitting radiation into two parts, so that radiation may be...
US20150078740 FIBER OPTIC COMMUNICATIONS NETWORK  
A fiber optic-based communications network includes: a power insertion device, connected to multiple fiber links from a data source, configured to provide power insertion to a hybrid fiber/power...

Matches 1 - 50 out of 217 1 2 3 4 5 >