20results about "Electromagnetic repeaters" patented technology

A long-distance DWDM lightwave transmission system operating in the 2000 nm wavelength region is proposed that is based on the utilization of hollow core fiber configured to exhibit low loss (e.g., on the order of 0.02 dB / km) in combination with a hybrid TDFA / HDFA repeater device. Multiple concatenated spans of the combination of the hollow core fiber and hybrid TDFA / HDFA repeater device are able to provide communication over path lengths in excess of 10,000 km without the need for electronic regeneration of the propagating signals. In one case, the hollow core fiber is configured as a double-nested anti-resonant nodeless fiber (DNANF) with the number of nested structures and their various parameters optimized to provide the low loss operation in the 2000 nm region.

The utility model discloses an unmanned plane optical fiber communication system, including airborne module, first type relay module, second type relay module and central control module, first type relay module has several, and first type relay module includes optical amplifier, airborne module is installed in unmanned plane and is connected unmanned plane's control unit, and airborne module is connected nearest end's first type relay module through optical fiber, and adjacent first type relay module is connected through optical fiber, and the first type relay module of farthest end is connected second type relay module through optical fiber, and second type relay module and central control module central control module wireless connection, and airborne module is communicated with central control module through first type relay module, second type relay module and central control module bidirectionally. The utility model discloses the combination of optical fiber communication and wireless communication, and the mode of relay, can effectively improve the working distance of optical fiber unmanned plane, and can increase the anti -interference distance to increase the safe working distance of optical fiber unmanned plane.

Transparent optical repeater for satellite, and communication satellite including such a repeater. This transparent optical repeater, configured for onboard use on a satellite, comprises: - an optical fiber (OF) assembly; - a first optical head (OHU1); - a first low-noise optical amplifier (LNOA); - a polarization splitter and controller (PCS) comprising, for each output channel of the bandpass filter (BPF), a channel polarization splitter and controller (C-PCS); - a third high-power optical amplifier (HPOA), per output channel of the polarization splitter and controller (PCS); - a polarization combination unit (PBC), configured to recombine the respective output channels of the two optical multiplexers (HPWDM); and - a second optical head (OHU2) configured to output the optical signals from the output of the polarization combination unit (PBC). Figure for the abstract: [Fig. 4]

The application discloses a kind of using OLT as cloud relay terminal equipment cloud method, specifically relates to OLT transmission technical field, including a kind of using OLT as cloud relay terminal equipment cloud method, including the following steps: S1, OLT is connected to cloud platform first;S2, user creates the request of access terminal;S3, terminal equipment establishes WAN link, obtains IP address from OLT;S4, OLT is requested to establish relay tunnel, from cloud by request ID resource;S5, remote request is forwarded to terminal equipment, the present application changes the mode that existing OLT sends data to ONU, and the verification distinguishing of other ONU being carried out data communication is carried out using the verification code information in processing module, and it is verified that two ONU demand data is identical if successful, and equal amount of data transmission is directly copied in OLT to corresponding ONU, not only improve the interaction speed of data, also greatly reduce the operation pressure of cloud data.

This is a distributed network element and submarine network element management system for optical communication systems. [Solution] The system includes a plurality of cable landing stations configured to be communicatively coupled using one or more optical communication cables in a peer-to-peer network for routing one or more optical signals using one or more network elements. Each cable landing station includes a management device configured to determine one or more optical communication paths for routing optical signals, and a command / response optical device communicatively coupled to the management device for routing optical signals based on the optical communication paths. Upon receiving a request to route at least one optical signal, the management device of each cable landing station is configured to determine at least one optical communication path for routing the optical signal based on a topology map of the peer-to-peer network of the plurality of cable landing stations.

An optical communication system and method. The system includes a plurality of cable landing stations configured to be communicatively coupled using one or more optical communication cables in a peer-to-peer network for routing of one or more optical signals using one or more network elements. Each cable landing station includes a management device configured to determine one or more optical communication paths for routing optical signals, and a command / response optical device communicatively coupled to the management device for routing optical signals in accordance with the optical communication path. In response to receiving a request for routing at least one optical signal, the management device of each cable landing station is configured to determine at least one optical communication path for routing the optical signal in accordance with a topology map of the peer-to-peer network of the plurality of cable landing stations.

Amplifiers can be appropriately positioned in optical communication systems. [Solution] An information processing device is provided, comprising: an acquisition unit that acquires information indicating whether or not a detachable optical amplifier that amplifies at least one of a transmitted optical signal and a received optical signal is connected to a first optical relay device; a determination unit that, if the detachable optical amplifier is connected to the first optical relay device, determines the gain of the detachable optical amplifier based on the signal quality between the first optical relay device and a second relay device that communicates with the first optical relay device by optical signal; and a control unit that causes the detachable optical amplifier to set the gain determined by the determination unit.

An optical communication system and method. The system includes a plurality of cable landing stations configured to be communicatively coupled using one or more optical communication cables in a peer-to-peer network for routing of one or more optical signals using one or more network elements. Each cable landing station includes a management device configured to determine one or more optical communication paths for routing optical signals, and a command / response optical device communicatively coupled to the management device for routing optical signals in accordance with the optical communication path. In response to receiving a request for routing at least one optical signal, the management device of each cable landing station is configured to determine at least one optical communication path for routing the optical signal in accordance with a topology map of the peer-to-peer network of the plurality of cable landing stations.

This application discloses an optical amplifier, an optical module, and an optical repeater. The optical amplifier includes: a beam splitter wavelength router for splitting an input target signal light into multiple signal beams according to wavelength, and inputting each signal beam into an optical gain region module corresponding to the wavelength of the signal beam; multiple optical gain region modules for amplifying the power of the input signal beams according to the gain value of the optical gain region modules, and inputting the amplified signal beams into a beam combiner wavelength router; a beam combiner wavelength router for combining the signal beams output from the multiple optical gain region modules and outputting the combined signal light; and multiple gain feedback modules for sending feedback signals to each optical gain region module according to the signal power of the signal light output from the beam combiner wavelength router. The feedback signals are used to adjust the gain value of each optical gain region module, wherein the gain values ​​adjusted by the feedback signals sent to each optical gain region module are not exactly the same.

A long-distance DWDM lightwave transmission system operating in the 2000 nm wavelength region is proposed that is based on the utilization of hollow core fiber configured to exhibit low loss (e.g., on the order of 0.02 dB / km) in combination with a hybrid TDFA / HDFA repeater device. Multiple concatenated spans of the combination of the hollow core fiber and hybrid TDFA / HDFA repeater device are able to provide communication over path lengths in excess of 10,000 km without the need for electronic regeneration of the propagating signals. In one case, the hollow core fiber is configured as a double-nested anti-resonant nodeless fiber (DNANF) with the number of nested structures and their various parameters optimized to provide the low loss operation in the 2000 nm region.

There is provided an information processing device including an acquisition unit that acquires information indicating whether a detachable optical amplifier that amplifies at least one of a transmission optical signal and a reception optical signal is connected to a first optical relay device, a determination unit that determines, in a case where the detachable optical amplifier is connected to the first optical relay device, a gain of the detachable optical amplifier based on a signal quality between the first optical relay device and a second optical relay device that communicates with the first optical relay device by an optical signal, and a control unit that causes the gain determined by the determination unit to be set in the detachable optical amplifier.

A distributed network element and subsea network element management system for an optical communication system. The system includes a plurality of cable landing stations configured to communicatively couple using one or more optical communication cables in a peer-to-peer network to route one or more optical signals using one or more network elements. Each cable landing station includes a management device configured to determine one or more optical communication paths for routing optical signals, and a command / response optical device communicatively coupled to the management device for routing optical signals according to the optical communication paths. In response to receiving a request to route at least one optical signal, the management device of each cable landing station is configured to determine at least one optical communication path for routing the optical signal from a topological graph of the peer-to-peer network of the plurality of cable landing stations.

An optical relay device (2) comprises: a coherent reception front end unit (110) that coherently detects an input optical signal to be inputted on the basis of locally emitted light; a coherent transmission front end unit (120) that coherently modulates the coherently detected signal on the basis of transmission light, and outputs a coherently modulated output optical signal; a light source (21) that outputs first light having a first wavelength; a light source (22) that outputs second light having a second wavelength; and a selection unit (130) that selects one of the first light and the second light, and outputs the selected light as locally emitted light or transmission light.

To provide an optical repeater device and a relay method with which it is possible to achieve synchronization at the RF output point of a slave unit between a plurality of optical repeater systems.SOLUTION: An optical repeater device of an embodiment comprises a timing detection unit, a timing acquisition unit, and a synchronization unit. The timing detection unit detects downlink and uplink switching timings for each of a plurality of base station devices. The timing acquisition unit acquires information regarding the downlink and uplink switching timings, for a plurality of base station devices connected to other optical repeater devices. The synchronization unit synchronizes signals from the plurality of base station devices connected to the optical repeater device, on the basis of the switching timings detected by the timing detection unit and the information acquired by the timing acquisition unit.SELECTED DRAWING: Figure 2

Systems and methods for operating a passive optical network (PON) extender. The methods comprise: receiving, by the PON extender, a first optical signal from a remote node device of a passive optical network via a first optical link; amplifying the first optical signal using a Raman amplifier of the PON extender to obtain a first Raman amplified optical signal; amplifying the first Raman amplified optical signal using a first optical amplifier of the PON extender to obtain an amplified uplink signal (wherein the first optical amplifier is different than the Raman amplifier); and passing the amplified uplink signal to an optical line terminal via a second optical link (wherein the optical line terminal is disposed locally at a hub site along with the PON extender).

A safety mechanism for a routed optical network is provided. A method includes at an optical signal amplification device including an optical amplifier that is configured to amplify an optical signal, receiving an indication that optical power generated by the optical amplifier is not being received at a downstream optical coupler / splitter that is in communication with the optical signal amplification device, and, in response to receiving the indication, causing the optical amplifier to reduce amplification of the optical signal.

This invention provides a communication system and method based on integrated photonics for optical fiber communication and wireless communication. The system includes: a baseband transmitter, a first optical fiber link, a radio frequency (RF) repeater, a second optical fiber link, and a baseband receiver. The baseband transmitter converts the original electrical signal into an optical baseband signal. The baseband transmitter and the RF repeater are connected via the first optical fiber link. The RF repeater converts the received optical baseband signal into a target electrical signal in the target terahertz frequency band. The target electrical signal is transmitted through a wireless transmission module, and a wireless receiving module receives the target electrical signal. A second integrated electro-optic modulator converts the target electrical signal into an optical intermediate frequency (IF) signal. The RF repeater and the baseband receiver are connected via the second optical fiber link. The baseband receiver converts the optical IF signal into an output electrical signal. This invention's system can balance the high speed of optical fiber communication and the flexibility of wireless communication, achieving ultra-high-speed, low-latency communication transmission across the entire link.