|
Match
|
Document |
Document Title |
|
|
7630634 |
Method and apparatus for managing an optical signal
A node for managing an optical signal includes a first system optics card for providing channels to be transported over a first optical transport link and receives channels from a second optical...
|
|
|
7620317 |
Programmable loss of signal detect hardware and method
A loss of signal assert and de-assert level programming mechanism in an optical transceiver coupled to a host computing system. A control module is connected to the host so as to receive the...
|
|
|
7620319 |
Passive optical network monitoring method and passive optical network
This invention relates to a method for monitoring at least one section ( 50 ) of an optical fiber link ( 15,16 ), preferably a distribution section behind a passive distribution node ( 10 - 13 ),...
|
|
|
7613392 |
1:N protection in an optical terminal
A communication network comprising at least one first terminal, at least one second terminal, a plurality of links, and at least first and second nodes. The first node is bidirectionally coupled to...
|
|
|
7609975 |
Optical transmission apparatus
In an optical transmission apparatus controlling an optical output portion by a working optical output controller and a protection optical output controller, the optical output controllers...
|
|
|
7606487 |
Distortion measurement in optical communication systems
The distortion component of an optical signal received from an optical transmission system, such as an all-optical system, subject to noise and amplitude distortion components, can be evaluated by...
|
|
|
7606488 |
Wavelength-division-multiplexing optical transmission system and control method thereof
In a wavelength-division-multiplexing optical transmission system in which optical-node apparatuses that perform relay transmission of wavelength-division-multiplexed light are located at specified...
|
|
|
7603034 |
Optical identification demodulation method and system
A telecommunications network component comprising: a processor configured to implement a method comprising: receiving an optical signal comprising at least one identification signal, the...
|
|
|
7599624 |
System and method for switching channels using tunable laser diodes
A channel switching function is added to a wavelength division multiplexing passive optical network (WDM-PON) system, which is an access optical network system, and the potential transmission rate...
|
|
|
7596314 |
Optical communication management systems
An optical medium, whether inside or outside an internet/telecommunications backbone, is managed using a management signal at a wavelength which is distinct from wavelengths of service signals. A...
|
|
|
7587139 |
Optical channel power control in WDM networks
Information about optical amplifier ASE power is propagated down a link. Each amplifier along the link can learn of the ASE power at its input and take this input ASE power into account in...
|
|
|
7583902 |
Module to module signaling utilizing amplitude modulation
A method and apparatus configured to incorporate system data for transmission as part of or concurrently with network data. The system data may comprise communication system data for use in...
|
|
|
7580633 |
Method and device for data-flow protection of optical interface in data communication equipment
A method for data-flow protection of an optical interface in data communication equipment includes: receiving an optical-signal from a source-neighboring device, then duplicating the received...
|
|
|
7580631 |
Optical transmission device for controlling optical level of transmission signal in optical transmission system
An optical transmission device includes: an attenuator that attenuates an optical signal from an adjacent optical transmission device; an optical element that is arranged downstream of the...
|
|
|
7577356 |
Optical communication systems and methods of operating such optical communication systems
An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device...
|
|
|
7567758 |
Transceiver module and integrated circuit with multi-rate eye openers and bypass
A transceiver module having intergrated eye diagram opening functionality for reducing jitter is describe. The transceiver module may transmitter eye opener and a receiver eye opener integrated in...
|
|
|
7565079 |
System and method for optical network demarcation
A system and method are presented for demarcating an optical network. The system comprises an optical monitor that receives a portion of an outbound signal from an optical network and generates a...
|
|
|
7561796 |
Optical sending apparatus, optical receiving apparatus, and optical transmission system for supervising fault information and methods thereof
An optical transmission system for transmitting optical signals in which signals at different bit rates coexist, includes an optical sending apparatus for, when one or more faults are detected in a...
|
|
|
7561799 |
Optical path switching device
An optical path switching device includes compact and unpackaged components; the components are mounted onto a single platform; and the components are coupled by luminous flux. Connection between...
|
|
|
7558479 |
Analysis and control of optical communications systems
An optical communications system has a plurality of spans between a transmitter and a receiver. The receiver has optical to electrical conversion circuitry for converting the received optical...
|
|
|
7551852 |
Module to module signaling
A method and apparatus configured to transmit module data between optic modules over a primary communication channel, such as an optic fiber configured to carry network data or outgoing data. A...
|
|
|
7551857 |
Optical transmission system
An optical amplifier may be quickly returned from a shutdown state to a regular state after getting recovery information of a fault. Gain setting by ASE is conducted to the repeaters on the...
|
|
|
7548696 |
Fiber-to-the-home (FTTH) optical receiver with distributed gain control
A fiber-to-the-home (FTTH) system transmits forward and reverse optical signals, such as video, voice, and data signals, via optical fiber, and includes a plurality of home network units. The home...
|
|
|
7546035 |
Method for conveying management information
The invention relates to a method for conveying management information in a WDM system from a number of wavelength converters to a central management unit, wherein a management information signal...
|
|
|
7542674 |
Optical link performance monitoring
Systems and methods for verifying performance at an intermediate point in an optical link are provided by virtue of one embodiment of the present invention. One application is locating a fault...
|
|
|
7539413 |
Observation apparatus and observation system
The present invention discloses a submarine observation system in which a plurality of carrier lights assigned to each submarine observation equipment is transmitted from a land terminal apparatus...
|
|
|
7526200 |
Wavelength-division multiplexing optical transmitter
An optical transmission apparatus includes optical transmitters for transmitting optical signals and first monitor units for monitoring optical signals from the optical transmitters. A multiplexer...
|
|
|
7526199 |
Optical transmission equipment preventing malfunction in recovery from fault
An optical transmission apparatus includes a demultiplexer for separating wavelength-division multiplexing light received from a first optical transmission line into signals of different...
|
|
|
7522845 |
WDM laser wavelength control
A transmitter ( 11 ) emits a single wavelength optical signal and transmits this as a wavelength channel ( 13 ) in a compound multiplex signal through the WDM network. The receiver ( 12 ) selects...
|
|
|
7522842 |
Optical transmission system using Raman amplification
A commercially viable All-Raman system, is implemented by removing the dispersion compensating Fiber (DCF) and two stage amplifier at each span, and including a transmission path dispersion...
|
|
|
7509438 |
Bi-directional line switched ring support for path trace monitoring on a protection path
Methods and apparatus for enabling a protection path within a network to be monitored are disclosed. According to one aspect of the present invention, a method for sending traffic on a path within...
|
|
|
7509047 |
System and method for subcarrier modulation in ISM band as supervisory channel
Apparatus and method for transmitting a supervisory signal for optical network applications. The apparatus includes a subcarrier transmission system configured to receive a first supervisory signal...
|
|
|
7502565 |
Circuit for filtering a laser signal
A laser filter circuit includes an input terminal configured to receive an input laser signal and a first filter chain configured to generate a filtered signal. The first filter chain is coupled to...
|
|
|
7493040 |
Method and apparatus for securing fiber in an optical network
A method and apparatus for securing an optical communication link includes the step of identifying a profile of the link by measuring, at the transmitter, optical back-reflections from optical...
|
|
|
7489865 |
Integrated optical communication and range finding system and applications thereof
The present invention is directed toward systems for conducting laser range and enabling optical communication between a plurality of entities and to the application of such systems in a secure...
|
|
|
7486893 |
Dynamic optical interconnect system reference signal formation
The disclosed technology provides a dynamic interconnection system which allows to couple a pair of optical beams carrying modulation information. In accordance with the disclosed technology, two...
|
|
|
7486889 |
Transceiver test module employing an optical wrap
A transceiver test module and method for testing an optical transceiver. An optical wrap interconnects the optical transmitter and optical receiver of an optical transceiver. A processor system...
|
|
|
7477847 |
Optical and electrical channel feedback in optical transceiver module
Optical transceivers have loopback and pass-through paths for diagnosing transceiver components and optical networks connected to the optical transceiver or for routing data out of the transceiver...
|
|
|
7474852 |
System for communication of video, audio, data, control or other signals over fiber
A system for communication of signals between remote devices and monitoring and control devices via fiber. The system in accordance with one aspect of the invention includes a plurality of remote...
|
|
|
7471898 |
Device and method for optical supervisory channel framing in optical transport network system
Disclosed is a device and method for optical supervisory channel framing in an optical transport network system including at least one of an optical transmission section, an optical multiplex...
|
|
|
7469102 |
Wavelength-division-multiplexing passive optical network utilizing fiber fault detectors and/or wavelength tracking components
Various methods, systems, and apparatuses is described in which a passive-opticalnetwork includes a first multiplexer/demultiplexer, a second multiplexer/demultiplexer, a wavelength tracking...
|
|
|
7466923 |
Polarization mode dispersion compensation
Methods and systems for PMD compensation in an optical communication system are implemented by transmitting multiple optical signals through a common optical conduit to an optical compensator that...
|
|
|
7466921 |
Drop-and-continue device
Disclosed is a drop-and-continue device ( 84 ), provided between a signal converter ( 85 ) which supplies a signal to an end user and a wavelength-division multiplexing device ( 83 ) which...
|
|
|
7460785 |
Performance monitoring in an optical communication system
An optical performance monitor (OPM), e.g., for use in an optical network. The OPM may be configured to characterize one or more impairments in an optical signal modulated with data. The OPM has an...
|
|
|
7460790 |
Non-linear compensation of timing jitter
Systems and methods for compensating transitions in a data stream to account for jitter including laser jitter. Transitions in the data stream are delayed or advanced depending on the laser jitter...
|
|
|
7460783 |
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures in optical networks are described. One embodiment is a method for allocation of protection...
|
|
|
7457538 |
Digital performance monitoring for an optical communications system
A digital performance monitoring method and system for an optical communications system utilizes a channel monitor and a digital signal processor (DSP). The channel monitor is designed to monitor a...
|
|
|
7457549 |
Sub signal modulation apparatus, sub signal demodulation apparatus, and sub signal modulation demodulation system
A sub signal modulation apparatus, with the intention of stabilized transmission of a sub signal superimposed on main signal light irrespective of the intensity of the main signal light when used...
|
|
|
7457542 |
Optical access network system
An optical access network system having a function of correcting upstream signal waveform distortions occurring in the PON section, wherein a central office side apparatus comprises a main...
|
|
|
7447432 |
Regulating radiation component power in wavelength division multiplexed optical communication systems
There is provided a method of, and apparatus for, regulating radiation component (wavelength channel) power in a wavelength division multiplexed (WDM) optical communications system ( 10 ). The...
|