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9036991 Optical transceiver having an OTDR mode, and a method of obtaining test data for testing an optical fiber  
An optical transceiver has a communications mode and an optical time domain reflectometer (OTDR) mode. The transceiver comprises a transmitter channel and a receiver channel operable, in the...
9031415 Adaptor system for an Ethernet network  
An Ethernet adapter system may include a transmitter to insert a payload type identifier sequence in a generic frame procedure header to indicate that a network is a converged enhanced Ethernet...
9008500 Protection system, method and apparatus for optical network  
The invention discloses a system, a method and an apparatus for optical network protection. The system includes: an output control apparatus for obtaining protection mode information configured by...
9008514 Method and apparatus for construction of compact optical nodes using wavelength equalizing arrays  
Example embodiments of the present invention relate to An optical node comprising of at least two optical degrees; a plurality of directionless add/drop ports; and at least one wavelength...
8989574 Method and device for monitoring WDM signal light  
A WDM signal light monitoring device includes a first monitor for monitoring input-side WDM main signal light and output-side WDM main signal light for each wavelength; and a second monitor for...
8989572 Optical path establishing method and optical node apparatus  
An optical node apparatus that establishes an optical path between a first optical node and a second optical node in an optical network include a frequency modulation unit that superimposes a...
8989573 Sensing apparatus  
A sensing apparatus includes: a broadband optical source; a first pseudorandom number generator generating a first pseudorandom number code string to modulate the broadband optical source; at...
8983286 Method and apparatus for protection switching in optical transport network  
A node of an optical transport network system transmits optical wavelengths to an adjacent node through an operational line. An apparatus for protection switching of the optical transport network...
8983290 System and method for monitoring a dual-polarization signal using an in-band supervisory signal  
Systems and method for monitoring an optical power of a dual-polarization signal are disclosed. The systems and methods may include measuring a first parameter set associated with a supervisory...
8971701 Cueing system for universal optical receiver  
A universal optical receiver may include an optical channel monitor configured to acquire spectral data for an optical signal on at least one selected optical channel, a tunable local oscillator...
8965209 Systems and methods for extending optical network services across non-optical channels  
An optical communication system comprises a network interface device (NID) having a media converter coupled to an optical fiber of a passive optical network (PON). The media converter converts...
8965200 Method, apparatus and system for detecting connection status of optical fiber jumper  
A method, an apparatus and a system for detecting a connection status of an optical fiber jumper are provided in the embodiments of the present invention. The method for detecting a connection...
8958692 Optical fiber transmission system and power control method of the same  
An optical transmission system includes a first node and a second node, the first node includes a first optical amplifier which outputs a signal to the second node through a first transmission...
8958702 System and method for reducing interference of a polarization multiplexed signal  
In accordance with the present disclosure, disadvantages and problems associated with polarization dependent effects of a polarization multiplexed optical signal may be reduced through...
8953948 Optical transport network synchronization and timestamping systems and methods  
The present disclosure provides to Optical Transport Network (OTN_ synchronization systems and methods that maintain proper sequential ordering of events at nodes which may be utilized in...
8948586 Method and apparatus for laser overlap detection  
There are disclosed systems and methods for detecting whether an Optical Network Unit (ONU) in a network may be causing a communications interference due to laser overlap. In one embodiment, an...
8942565 Wavelength assignment in an optical WDM network  
The path selection and wavelength assignment to a selected path are performed by mapping the wavelength reach to the demand distribution (agile reach) resulting in a 50-60% increase in the network...
8942558 Method and apparatus for displaying a three dimensional representation of available wavelength paths across a network  
Due to demand for more network bandwidth, a need for multi-user optical network topologies has, and will continue to, increase. A method or corresponding apparatus in embodiments of the present...
8942555 Fiber protection and power save with security  
A system and method for Passive Optical Networks (PON) providing integration (cross-correlation) of powersave and fiber protection, optionally with encryption, facilitating the successful...
8938164 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...
8938165 Optical transmission device, optical transmission system, optical transmission method and program  
An optical transmission device according to the present invention comprises: a Raman amplification means; a main signal light sending means which sends first main signal light; a communication...
8934783 Adaptor system for an ethernet network  
An Ethernet adapter system may include a transmitter to insert a payload type identifier sequence in a generic frame procedure header to indicate that a network is a converged enhanced Ethernet...
8929742 Optical communication module, and optical communication system in which optical communication module is used  
An optical communication module in which the pin arrangement can be applied flexibly. An optical communication module has an outer shape formed based on normal standards and which is able to...
8917988 End-to-end carrier frequency control to improve bandwidth utilization in an optical network  
A system to provide carrier frequency control in an optical network includes a first network element monitoring performance information and a second network element coupled to the first network...
8913891 Technique for blocking of optical channels  
A method and a Reconfigurable Optical Add Drop Multiplexer (ROADM) where blocking of a first optical signal carried over a specific optical channel in the ROADM is performed by compensating the...
8913887 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...
8903249 Method and apparatus for suppressing optical beat interference noise in raman amplifiers  
A method and apparatus for suppressing pump-mode optical beat interference noise in a Raman amplified fiber link of an optical network, wherein a wavelength of a laser beam generated by a first...
8897646 Optical add/drop multiplexer  
An optical add/drop multiplexer including one or more optical drop multiplexers connected in free space or fused by optical fiber pigtails, a wavelength blocker with an input port connected to an...
8891958 Transmission quality determination method, transmission path selection method and network management system  
There is provided a method of determining transmission quality of a path in an optical communication network system obtained by connecting a plurality of networks, the method including: acquiring...
8891960 Optical data communications  
A method of communicating data between a network device and a data network to which the device is connected via an optical fiber data link in which the device is connected to the optical fiber...
8882366 Chip identification pads for identification of integrated circuits in an assembly  
Chip identification pads for identification of integrated circuits in an assembly. In one example embodiment, an integrated circuit (IC) assembly includes a controller, a plurality of ICs, a...
8886051 Skew compensation and tracking in communications systems  
Compensation for in-phase (I) and quadrature (Q) timing skew and offset in an optical signal may be achieved based on the correlation between derivatives of I and Q samples in the optical signal....
8886036 Optical line terminal for monitoring and controlling upstream/downstream optical signals  
Disclosed is an optical line terminal for monitoring and controlling upstream and downstream optical signals, and more particularly, to an optical line terminal for monitoring and controlling...
8879914 Low-energy optical network architecture  
A method and apparatus for controlling traffic in an optical network having a plurality of OLTs for communicating with a plurality of PONs. A traffic controller receives traffic information...
8879905 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...
8873964 Optical autodiscovery for automated logical and physical connectivity check between optical modules  
Optical autodiscovery is provide between two optical modules to insure that when an optical signal is coupled between the two optical module, the optical signal from a first module does not...
8873946 Predictive end-to-end management for SONET networks  
A system and method is disclosed that allows for the monitoring, analyzing and reporting on performance, availability and quality of optical network paths. The correlation of PM parameter metrics...
8867913 Optical transport network high order mapping systems and methods  
Optical Transport Network (OTN) High Order (HO) mapping systems and methods utilize pointer processing to map one HO signal into another similarly sized HO signal. An OTN HO mapping method and...
8867922 Control device of node transferring signal light  
To provide a technology of preventing an optical signal from being mistakenly recognized as an optical noise even when a surge occurs. A control device of a node that transfers signal light...
8861953 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...
8861952 Redundancy and interoperability in multi-channel optoelectronic devices  
A multi-channel optoelectronic device is configured to establish a redundant status link with a remote device. The optoelectronic device can transmit N transmit optical signals to the remote...
8855486 Remotely controlled fiber testing method  
A remotely controlled fiber testing method has the steps of: building a fiber network system including a local fiber station and a remote fiber station; sending a modulated signal to the remote...
8837938 Method and device for monitoring submarine cable system  
A method and a device for monitoring a cable system in the field of communications are provided. An optical signal emitted by an optical source to a transmission link of the cable system is...
8831436 Method and apparatus for local optimization of an optical transmitter  
Consistent with the present disclosure, an optical receiver is paired with an optical transmitter in a transceiver card or module, for example. During normal operation, the optical transmitter...
8824885 Protection device and protection method for optical network  
Optical network protection devices and protection methods including: a working line; a protection line; a determination module configured to determine the protection type of optical network; a...
8824891 Method and apparatus for preventing signal interference in a passive optical network  
A method removes signal interference in a passive optical network. The passive optical network includes an optical line terminal, a splitting unit coupled with the optical line terminal, an...
8818202 Wavelength sensing lighting system and associated methods for national security application  
A wavelength sensing lighting system may include a light source, a sensor and a controller. One or more light sources and sensors may be included in an array. The light source may emit an...
8811815 Optical network testing  
A method includes generating a test signal and modulating the test signal. The method may also include transmitting the test signal on an optical path, where the optical path may include a number...
8811820 Optical port discovery in a WDM optical network  
A hub node in a wavelength division multiplexed optical network automatically discovers at least one of new client-side optical ports and new edge-side optical ports. The hub node comprises a...
8805185 Wavelength-division multiplexing transmission device  
A wavelength-division multiplexing transmission device including: a dummy light source configured to emit and quench dummy light; a monitoring unit configured to monitor an optical level relating...