19results about "Electromagnetic network combinations" patented technology

Embodiments of this application disclose a method for communication in a data center, an apparatus, and a system. The data center includes a plurality of servers, a plurality of electrical switches, and at least one optical cross-connect device, and uplink ports of at least two of the plurality of electrical switches are interconnected to the at least one optical cross-connect device. The method includes: receiving network topology information delivered by a topology manager; obtaining a data flow; and configuring a routing policy for the data flow based on the network topology information, where the routing policy includes any one or a combination of the following routing policies: a first routing policy, where the first routing policy indicates to forward the data flow through an optical channel in the at least one optical cross-connect device; a second routing policy, where the second routing policy indicates to split the data flow into at least two sub-data flows for forwarding; and a third routing policy, where the third routing policy indicates to forward the data flow through the electrical switch in the data center.

The application discloses a communication system, related equipment and method. The communication system comprises a CO device and a plurality of RRHs. The plurality of RRHs form a ring network through optical fibers, and the CO device is connected to the ring network. The CO device is used for modulating a baseband signal onto N first optical carriers generated by the CO device to obtain N second optical carriers, and transmitting the N second optical carriers to the ring network through a first optical fiber. Any one of the plurality of RRHs is used for obtaining a target optical carrier from the received second optical carrier, converting the target optical carrier into an electrical signal, and transmitting the electrical signal as a downlink signal. The embodiment of the application realizes an all-optical communication system through the layout of optical devices on the architecture and through the optical ring network topology, and the communication system has a self-healing protection function.

An optical transceiver (101) of an optical relay apparatus includes: a coherent reception front-end unit (110) that coherently detects an input optical signal to be input, based on local oscillation light, and outputs the coherently detected first analog electric signal; a coherent transmission front-end unit (120) that coherently modulates a second analog electric signal acquired by turning around the first analog electric signal, based on transmission light, and outputs the coherently modulated output optical signal; and an analog compensation unit (130) that performs analog signal processing on the first analog electric signal in such a way as to compensate for signal quality according to a signal characteristic between an input of the coherent reception front-end unit (110) and an output of the coherent transmission front-end unit (120), and thereby generates the second analog electric signal.

An optical transceiver (101) of this optical relay device comprises a coherent reception front end (110) that coherently detects an input optical signal on the basis of local oscillation light and outputs a coherently-detected first analog electric signal, a coherent transmission front end (120) that coherently modulates, on the basis of transmission light, a second analog electric signal obtained by turning around the first analog electric signal and outputs a coherently-modulated output optical signal, and an analog compensation unit (130) that performs analog signal processing on the first analog electric signal to compensate for signal quality according to signal characteristics between the input at the coherent reception front end (110) and the output at the coherent transmission front end (120) and thereby generates the second analog electric signal.

To provide an optical repeater, an optical transmission system, and an optical repeating method that are capable of restraining degradation of signal quality.SOLUTION: In a transmitting / receiving unit of an optical repeater, an optical transceiver 101 includes a coherent receiving front-end unit 110 for performing coherent detection on an input optical signal SO1 based on local oscillator emission and outputting a coherently detected first analog electrical signal SA1, a coherent transmitting front-end unit 120 for performing coherent modulation on a second analog electrical signal SA2 obtained by folding back the first analog electrical signal based on the transmitted light and outputting a coherently modulated output optical signal SO2, and an analog compensation unit 130 for performing analog signal processing on the first analog electrical signal so as to compensate for the signal quality according to the signal characteristics between the input of the coherent receiving front-end unit 110 and the output of the coherent transmitting front-end unit 120, thereby generating a second analog electrical signal.SELECTED DRAWING: Figure 7

The present disclosure relates to systems and methods for distribution of signals. More specifically an adapter for wireless distribution of sensor and / or control signals to an external network is disclosed. The adapter is arranged to be mounted in a transmission path of a sensor device and / or a control system and is configured to obtain at least one first sensor signal from the sensor device and / or at least one first control signal from the control system. Further, the adapter is configured to convert each of the obtained at least one first signals to a corresponding at least one second signal such that each of the obtained at least one first signal is galvanically isolated from its corresponding second signal. The adapter is further configured to transmit, each of the converted corresponding second signals to the external network wirelessly via at least one wireless communication access point located remotely from the adapter.

Systems and methods for performing an upstream trace operation are presented. An exemplary method may include obtaining an indication of a new service location of a passive optical network (PON); detecting a physical polyline route, within the PON, from an on-ramp facility corresponding to the new service location to a serving office of the PON, the detecting based on (i) respective geospatial locations of a plurality of optical components of the PON, and (ii) interconnections of the plurality of optical components, and the plurality of optical components including the on-ramp location, a terminal disposed at the serving office, and at least one optical fiber optically connecting the on-ramp location and the terminal; and causing optical services to be delivered from the serving office to the new service location via the detected physical polyline route.

One example method includes receiving network topology information delivered by a topology manager, where the data center includes a plurality of servers, a plurality of electrical switches, and at least one optical cross-connect device. A data flow can be obtained. A routing policy can be configured for the data flow based on the network topology information, where the routing policy includes any one or a combination of the following routing policies: a first routing policy, where the first routing policy indicates to forward the data flow through an optical channel in the at least one optical cross-connect device; a second routing policy, where the second routing policy indicates to split the data flow into at least two sub-data flows for forwarding; or a third routing policy, where the third routing policy indicates to forward the data flow through an electrical switch of the plurality of electrical switches.

An object of the present invention is to provide an optical access network that has high reliability for supporting information communication services and efficiently responds to difficult-to-predict optical fiber demand.An optical access network configuration according to the present invention includes an optical fiber cable 11 that is looped to connect a wiring section 25 and an exchange office 10 together (hereinafter, an upper loop), an optical fiber cable 21 that is looped and laid in each wiring section 25 (hereinafter, a lower loop), and an optical fiber switching function unit 31 installed at a connection point 30 between the upper loop 11 and the lower loop 21. The optical fiber switching function unit 31 is a wiring board or an optical switch which can be switched by connector connection. The wiring board or the optical switch may be remotely controllable.

A backbone network (100) for use in an optical wireless communication system comprises one or more local switches (200) and one or more optical access points (300), APs, wherein local switches (200) are configured to provide to optical APs (300) connections to an external network. Each local switch (200) comprises a first type optical front end (210), OFE, having a rotatable orientation and a beam angle not larger than 60 degrees, and a second type OFE (230) having a 360-degree beam angle on the rotation plane of the first type OFE. Each optical AP comprises an OFE (310) having a rotatable orientation and a beam angle not larger than 60 degrees. The pairing and beam alignment between the first type OFE of a local switch and the OFE of an optical AP is achieved via the assist of the second type OFE of the local switch.

This application discloses a communication system and method, and a related device. The communication system includes a CO device and a plurality of RRHs, where the plurality of RRHs constitute a ring network by using optical fibers; the CO device is connected to the ring network, and is configured to: modulate a baseband signal to N first optical carriers that are generated by the CO device, to obtain N second optical carriers; and transmit the N second optical carriers to the ring network by using a first optical fiber. Any RRH of the plurality of RRHs is configured to: obtain a target optical carrier from received second optical carriers, convert the target optical carrier into an electrical signal, and transmit the electrical signal as a downlink signal. According to embodiments of this application, an all-optical communication system is implemented by using a layout of an optical component in an architecture and using an optical ring network topology; and the communication system has a self-healing protection function.

A backbone network (100) for use in an optical wireless communication system comprises one or more local switches (200) and one or more optical access points (300), APs, wherein local switches (200) are configured to provide to optical APs (300) connections to an external network. Each local switch (200) comprises a first type optical front end (210), OFE, having a rotatable orientation and a beam angle not larger than 60 degrees, and a second type OFE (230) having a 360-degree beam angle on the rotation plane of the first type OFE. Each optical AP comprises an OFE (310) having a rotatable orientation and a beam angle not larger than 60 degrees. The pairing and beam alignment between the first type OFE of a local switch and the OFE of an optical AP is achieved via the assist of the second type OFE of the local switch.

Passive optical network system, optical line terminal and optical network unit. The present application discloses a PON system, OLT and ONU, and relates to the field of optical communication. The PON system comprises: an OLT and at least two ONUs, wherein the OLT and the at least two ONUs exchange data via a downstream channel and two upstream channels; the OLT sends downstream data to each ONU via the downstream channel, wherein the downstream data includes an upstream bandwidth authorization, and the upstream bandwidth authorization is used to control the ONU to send upstream data; the ONU receives the downstream data via the downstream channel; according to the upstream bandwidth authorization included in the downstream data, the upstream data is sent via a first upstream channel or a second upstream channel; the OLT receives the upstream data sent by each ONU via the first upstream channel and the second upstream channel; wherein the first upstream channel turns off the registration function, and the second upstream channel turns on the registration function.

Systems and methods for performing an upstream trace operation are presented. An exemplary method may include obtaining an indication of a new service location of a passive optical network (PON); detecting a physical polyline route, within the PON, from an on-ramp facility corresponding to the new service location to a serving office of the PON, the detecting based on (i) respective geospatial locations of a plurality of optical components of the PON, and (ii) interconnections of the plurality of optical components, and the plurality of optical components including the on-ramp location, a terminal disposed at the serving office, and at least one optical fiber optically connecting the on-ramp location and the terminal; and causing optical services to be delivered from the serving office to the new service location via the detected physical polyline route.

Systems and methods for performing an upstream trace operation are presented. An exemplary method may include obtaining an indication of a new service location of a passive optical network (PON); detecting a physical polyline route, within the PON, from an on-ramp facility corresponding to the new service location to a serving office of the PON, the detecting based on (i) respective geospatial locations of a plurality of optical components of the PON, and (ii) interconnections of the plurality of optical components, and the plurality of optical components including the on-ramp location, a terminal disposed at the serving office, and at least one optical fiber optically connecting the on-ramp location and the terminal; and causing optical services to be delivered from the serving office to the new service location via the detected physical polyline route.

Systems and methods for performing an upstream trace operation are presented. An exemplary method may include obtaining an indication of a new service location of a passive optical network (PON); detecting a physical polyline route, within the PON, from an on-ramp facility corresponding to the new service location to a serving office of the PON, the detecting based on (i) respective geospatial locations of a plurality of optical components of the PON, and (ii) interconnections of the plurality of optical components, and the plurality of optical components including the on-ramp location, a terminal disposed at the serving office, and at least one optical fiber optically connecting the on-ramp location and the terminal; and causing optical services to be delivered from the serving office to the new service location via the detected physical polyline route.

An optical communication network includes three or more nodes and a domain in which each of transmission paths, that connects two of the three or more nodes within the domain, is constituted by a multi-core fiber or a multi-core fiber connected body in which positions of markers on both end surfaces of the multi-core fiber connected body are swapped.

A backbone network (100) for use in an optical wireless communication system comprises one or more local switches (200) and one or more optical access points (300), APs, wherein local switches (200) are configured to provide to optical APs (300) connections to an external network. Each local switch (200) comprises a first type optical front end (210), OFE, having a rotatable orientation and a beam angle not larger than 60 degrees, and a second type OFE (230) having a 360-degree beam angle on the rotation plane of the first type OFE. Each optical AP comprises an OFE (310) having a rotatable orientation and a beam angle not larger than 60 degrees. The pairing and beam alignment between the first type OFE of a local switch and the OFE of an optical AP is achieved via the assist of the second type OFE of the local switch.

The present disclosure relates to systems and methods for distribution of signals. More specifically an adapter for wireless distribution of sensor and / or control signals to an external network is disclosed. The adapter is arranged to be mounted in a transmission path of a sensor device and / or a control system and is configured to obtain at least one first sensor signal from the sensor device and / or at least one first control signal from the control system. Further, the adapter is configured to convert each of the obtained at least one first signals to a corresponding at least one second signal such that each of the obtained at least one first signal is galvanically isolated from its corresponding second signal. The adapter is further configured to transmit, each of the converted corresponding second signals to the external network wirelessly via at least one wireless communication access point located remotely from the adapter.