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8184970 |
Optical transceiver with LED link information indicator
Exemplary embodiments of the invention relate to an analyzer device configured to interface with an optical transceiver module having a diagnostic communications port, wherein the port is...
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8160444 |
Apparatus and method for selecting and passing an optical wavelength from an aggregate optical signal
Apparatus, systems and methods for separating a selected optical signal wavelength component from a plurality of optical signal wavelength components of an aggregate optical signal, and for passing...
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8121475 |
Optical signal quality monitor for a high-bit rate signal
An optical signal quality monitor includes a splitter splitting an input optical signal into two signals; a low-frequency converter converting one split optical signal to a low frequency signal by...
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8111985 |
Apparatus and method for performing line analysis of continuous data signals
An apparatus for performing an optical line analysis of continuous data signals. The apparatus comprise a phase position processor for computing a phase early/late indicator; a phase control code...
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8112697 |
Method and apparatus for buffering an encoded signal for a turbo decoder
A method and apparatus for buffering an encoded signal having a plurality of codewords for a turbo decoder is provided. The method comprises de-interleaving each sub-block of the codeword received...
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8102902 |
System and method for improving DSL performance
A system and method is described for determining a condition of a communication line, such as the absence of a filter device on a digital subscriber line (DSL). A first signal characterized by a...
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8078701 |
Network design and determination of the arrangement of optical transmission devices in respective network stations
A network design apparatus designs arrangement of various types of optical transmission devices in stations within a linear section in a network. An acquisition unit acquires information concerning...
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8068729 |
Network testing apparatus, network testing method and recording medium thereof
This G-PON network testing apparatus composes a network by connecting between an OLT, ONU or ONT by a optical fiber. This testing apparatus stores testing items and code numbers in a storing...
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8064764 |
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...
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8055127 |
Wavelength division multiplex optical ring network
A wavelength division multiplex optical ring network comprises optical fibre (1-4) arranged in a ring configuration and a plurality of doped fibre optical amplifiers (17-20) arranged in the ring....
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8041217 |
System and method for managing wavelength drift in an optical network
In accordance with the teachings of the present invention, a system and method for managing wavelength drift in an optical network is provided. In a particular embodiment, the method includes...
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8036526 |
Method and apparatus for restoration of optical ring network operating conditions after a fault is repaired
A method and apparatus for restoration of operating conditions of a WDM optical ring network comprising a plurality of amplifiers linked together in a ring after a break or fault has occurred in...
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8032020 |
Self calibrated optical spectrum monitor
An optical spectrum monitor includes a tunable optical detector that receives optical channel monitoring signals from an optical channel and receives a control signal that selects a frequency of an...
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8027583 |
Wavelength division multiplexed systems with optical performance monitors
The specification describes optical performance monitors which are simplified by coupling single tunable optical filters to multiple channels being monitored. Optical measurements for more than one...
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8019231 |
Optical pattern recognition having reduced sensitivity to wavelength instability
In exemplary embodiments, all-optical pattern recognition for an optical input signal is achieved by wavelength-converting the input signal and then passively correlating the wavelength-converted...
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8014669 |
In-channel residual chromatic dispersion measurement
A system generates optical pulses, that include two frequencies within one optical channel, at a first end of an optical link, and receives the optical pulses at a second end of the optical link....
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7995915 |
Method and apparatus for testing transmission lines normally propagating optical signals
Portable apparatus for measuring parameters of optical signals propagating concurrently in opposite directions in an optical transmission path between two elements, at least one of the elements...
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7978972 |
Optical line terminal and optical network terminal
The optical line terminal has a PON transceiver including an error correction code decoder. The error correction decoder includes: a shortening compensation parameter table; and a syndrome...
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7957642 |
Efficient and simple bit error rate calculation on optical transport layer
Transport network interfaces operate to transport for Optical Transport Unit frames over an Optical Transport Network. Besides FEC bits for the Optical Transport Unit frames, the transmitting...
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7947945 |
Fiber optic sensing system, method of using such and sensor fiber
An embodiment of a sensor fiber includes: at least two fiber sections with a plurality of holes; and at least one other fiber section situated between said at least two fiber sections, wherein the...
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7945158 |
Transponder-less verification of the configuration of an optical network node
A method, apparatus, and program, for evaluating an optical network node. The method comprises providing at least one communication path of the node with a capability by which lasing can occur in...
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7945160 |
Method and system of monitoring a data transmission link, particularly an optical, bidirectional data transmission link
Systems and methods for monitoring a data transmission link, especially an optical, bidirectional data transmission link, in which a digital transmit signal is transmitted on a first transmission...
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7941048 |
Loss of signal detection
An apparatus and a method for accurately detecting Loss of Optical Power (LOS) by noise power cancellation effect and optical power is measured at two output ports of an athermal periodic filter,...
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7936671 |
Cable far end port identification using repeating link state patterns
Methods having corresponding apparatus and computer programs comprise: receiving a command to identify a connected port at a far end of a cable providing a communication link; and changing a state...
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7933209 |
Method for isolating layer 1 problems for digital signal circuits embedded in SONET
A method is disclosed that integrates performance monitoring data and alarms reported by Layer 3 network elements with alarms and performance monitoring data reported by Layer 1 SONET/SDH network...
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7899323 |
Multi-interface protocol analysis system
A device may include a first network module to capture network data at a first location in a network and a second network module to capture network data at a second location in the network...
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7889988 |
Optical transmission apparatus
An optical transmission apparatus to which an optical module having optical module information stored therein is attachable, the optical module information being manufacturing information about the...
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7885540 |
Methods and apparatus for optical modulation amplitude measurement
Techniques for measuring optical modulation amplitude (OMA) are disclosed. For example, a technique for measuring an OMA value associated with an input signal includes the following...
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7881613 |
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...
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7877009 |
Method and system for electrochemical impedance spectroscopy
A method and system of measuring the spectroscopic impedance of a sensor and its immediate surroundings. The sensor is disposed on an engineered structure and is coated with a protective coating....
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7869707 |
Measuring system comprising an intelligent sensor head and having a reduced power consumption for medium-voltage or high-voltage systems or in mining, and method therefor
Differently designed measuring systems exist of which most contain a central signal processing unit and a number of electrical measuring components, and in which the measured values furnished by...
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7865077 |
Optical communition system with N + 1 redundancy
An optical communication system has two or more active interfaces, each controlling the transmission and reception of optical signals between a communication network and one or more subscriber...
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7856185 |
Wireless monitoring of optoelectronic modules and network components
An optoelectronic module for converting and coupling an information-containing electrical signal with an optical fiber including a housing having an electrical input for coupling with an external...
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7853150 |
Identification and authorization of optoelectronic modules by host system
An optoelectronic module for converting and coupling an information-containing electrical signal with an optical fiber including a housing having an electrical input for detachably coupling with an...
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7844178 |
Local area warning of optical fiber intrusion
Disclosed is a method and apparatus which provides for alerting of potential fiber optic cable intrusion. A stress detector located at a fiber optic cable termination point detects stress on the...
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7822340 |
Photodiode assembly within a fiber optic tap and methods thereof
An arrangement in a fiber optic network device for analyzing a set of optical signals traversing the fiber optic network device is provided. The arrangement includes a set of ports for receiving...
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7809264 |
Prescriptive and diagnostic system and method for combined RF/optical transmission management
A diagnostic and prescriptive system and method for management of a combined optical and RF cable plant system. In an exemplary embodiment the method and system uses optical receivers in a hub or...
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7805074 |
Package starting control device
The invention relates to a package starting control device determining a moment and a sequence of starting a package corresponding to an individual wavelength to be wavelength-division-multiplexed...
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7805081 |
Methods and systems for monitoring multiple optical signals from a single source
Methods and systems for monitoring a plurality of different optical signals from a single source of such signals, where each such different optical signal is spatially separated from other such...
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7801443 |
Automatic circulation collection type data collecting system
An automatic circulation collection type data system is constructed by connecting a monitoring device and data collecting modules disposed at respective places through optical cables. The...
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7787777 |
Optical packet network system
An optical packet network system of a ring type, capable of preventing degradation of an optical signal, can be implemented by providing a mechanism relatively simple in structure, capable of...
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7761006 |
Method for designing optical network, and computer readable medium
An appropriate ring topology is selected by searching network topology information on the basis of given information about client signal paths on a predetermined condition, and a wavelength ring...
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7751725 |
Optical receiver with monitoring unit and a method for detecting consecutive identical state of optical signal
The present invention provides an optical receiver that includes a monitoring unit with a function to prevent the unit from misjudging of the loss-of-signal state. In particular, the present...
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7738588 |
Arrangement comprising a first semiconductor chip and a second semiconductor chip connected thereto
An arrangement including a first semiconductor chip and a second semiconductor chip connected thereto, where the second semiconductor chip is additionally connected to electrical loads and drives...
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7734172 |
Router having dual propagation paths for packets
A router comprising an interface module (IM), having an optical path and an electrical path and a speed sensor coupled between an input of the router and an input of the IM. The speed sensor is...
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7724654 |
Method for synchronized trunk failover and failback in a FC-AL switching environment
The synchronization of trunk failover between two FC-AL switches when a primary trunk failure occurs is disclosed. If primary trunk T1 should fail, S1 bypasses the cascade port and sends a MaRK...
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7711267 |
Remote management of central office operations
In one implementation, a system detects that a fiber within a fiber optic cable has failed and automatically causes a location of a faulty portion of the fiber to be identified in response to the...
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7711264 |
Local area warning of optical fiber intrusion
Disclosed is a method and apparatus which provides for alerting of potential fiber optic cable intrusion. A stress detector located at a fiber optic cable termination point detects stress on the...
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7684695 |
Optical diagnostic indicator
One apparatus embodiment includes a first light source, a second light source, and a receiver having a photodetector. The first light source emits a first signal at a nonvisible wavelength for data...
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7680364 |
Wavelength locking and power control systems for multi-channel photonic integrated circuits (PICS)
A transmissive active channel element is provided in each signal channel of a monolithic multi-channel TxPIC where each channel also includes a modulated source. The active channel element...
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