Abstract: Disclosed is a submarine network device, comprising a fiber set, a pump laser set, an erbium doped fiber amplifier (EDFA) set, a primary fiber coupler (CPL) set and a secondary CPL set, wherein the primary CPL set comprises N primary CPLs, the secondary CPL set comprises N secondary CPLs, with N being an integer greater than or equal to 3. The fiber set is configured to connect the pump laser set, the primary CPL set, the secondary CPL set and the EDFA set. An input port of each primary CPL in the primary CPL set is at least connected with a pump laser. An output port of each secondary CPL in the secondary CPL set is at least connected with an EDFA. Output ports of each primary CPL in the primary CPL set are respectively connected with two different secondary CPLs that are spaced by a secondary CPL, and input ports of each secondary CPL in the secondary CPL set are respectively connected with two different primary CPLs that are spaced by a primary CPL.

Abstract: Embodiments of the present application provide a submarine optical cable system for reducing the complexity of the submarine optical cable system. The submarine optical cable system comprises a first trunk station, a second trunk station, a branch station, first XC equipment, second OXC equipment, a trunk fiber set and a branch fiber. The trunk fiber set at least comprises a first trunk fiber and a second trunk fiber. The branch station is connected with the second trunk fiber arranged between the first OXC equipment and the second OXC equipment through the branch fiber. The first trunk station is configured for sending a first service through a first transmission channel in a first transmission channel set and sending a second service through a second transmission channel in a second transmission channel set. The first OXC equipment is configured for transferring the first transmission channel to the second trunk fiber.

Abstract: The present invention relates to a vehicle-mounted millimeter wave radar array antenna. The vehicle-mounted millimeter wave radar array antenna comprises: a plurality of horn units; an SIW antenna array composite layer, which comprises an SIW structure-based power divider formed on a high frequency material, wherein the horn units are arranged on the SIW antenna array composite layer; and a signal input/output layer. A transmission signal is transmitted from the signal input/output layer to the SIW antenna array composite layer, the power divider divides the transmission signal into multiple transmission signals, and the multiple transmission signals are radiated outwards by means of corresponding horn units. Provided in the present invention is a vehicle-mounted millimeter wave radar array antenna, which has the characteristics of having a small volume, being light-weight, featuring simple processing and having low fabrication costs.

Abstract: This application discloses a submarine cable fault determining method and apparatus for realizing detecting whether a fault occurs to a submarine cable, without depending on TTE. The submarine cable fault determining method includes: receiving, by a network management system, first detection information from a first device during a first preset time, and receiving second detection information from a second device during a second preset time, where the second detection information is used to indicate whether the second device receives a first heartbeat signal from the first device through a submarine cable, and the first detection information is used to indicate whether the first device receives a second heartbeat signal from the second device through the submarine cable; and determining, by the network management system based on the first detection information and the second detection information, whether a fault occurs to the submarine cable between the first device and the second device.

Abstract: A TPMS transmitter (100) fixing structure, comprising a valve stem and a core rod (200) in the middle of the valve stem, the core rod (200) having a connector suitable for connecting to the TPMS transmitter (100), and also comprising a protruding part protruding outward along the radial direction of the valve stem, such that, when the valve stem is mounted on a wheel rim (300) of an automobile, the protruding part is in contact with the wheel rim (300); adding a protruding part to the valve stem can counteract the rotational torque produced by the eccentricity and centrifugal force of the transmitter to forcefully prevent rotation of the transmitter during operation, and limits the mounting direction of the TPMS transmitter, ensuring that the TPMS transmitter is not biased when mounted on the wheel rim, and effectively reducing the risk of the loss of function or reduction in performance of the TPMS transmitter due to biased or backward mounting of the TPMS transmitter.

Abstract: This application discloses a submarine cable fault determining method and apparatus for realizing detecting whether a fault occurs to a submarine cable, without depending on TTE. The submarine cable fault determining method includes: receiving, by a network management system, first detection information from a first device during a first preset time, and receiving second detection information from a second device during a second preset time, where the second detection information is used to indicate whether the second device receives a first heartbeat signal from the first device through a submarine cable, and the first detection information is used to indicate whether the first device receives a second heartbeat signal from the second device through the submarine cable; and determining, by the network management system based on the first detection information and the second detection information, whether a fault occurs to the submarine cable between the first device and the second device.

Abstract: A cable accessory device, including a one-way conducting element and a grounding electrode. One end of the one-way conducting element is connected to a conductor structure in a cable, and the other end is connected to the grounding electrode. By applying voltages with different polarities to the one-way conducting element, the one-way conducting element is enabled to have different on/off states. When the on/off state of the one-way conducting element is an on state, the conductor structure in the cable is connected to the grounding electrode via the one-way conducting element, so as to measure direct current resistance of the conductor structure. Moreover, when the on/off state of the one-way conducting element is an off state, the one-way conducting element breaks connection between the conductor structure and the grounding electrode, so as to measure insulation resistance of an insulation structure.

Abstract: Disclosed is a submarine network device, comprising a fiber set, a pump laser set, an erbium doped fiber amplifier (EDFA) set, a primary fiber coupler (CPL) set and a secondary CPL set, wherein the primary CPL set comprises N primary CPLs, the secondary CPL set comprises N secondary CPLs, with N being an integer greater than or equal to 3. The fiber set is configured to connect the pump laser set, the primary CPL set, the secondary CPL set and the EDFA set. An input port of each primary CPL in the primary CPL set is at least connected with a pump laser. An output port of each secondary CPL in the secondary CPL set is at least connected with an EDFA. Output ports of each primary CPL in the primary CPL set are respectively connected with two different secondary CPLs that are spaced by a secondary CPL, and input ports of each secondary CPL in the secondary CPL set are respectively connected with two different primary CPLs that are spaced by a primary CPL.

Abstract: This application provides a submarine network device and a submarine cable system that may accurately detect a fault of a submarine optical repeater in time.

Abstract: Embodiments of the present invention provide a reconfigurable optical add-drop multiplexer apparatus, and relate to the field of communications, so as to solve the problem of inconvenient line failure detection. The ROADM apparatus includes: a first ROADM, a second ROADM, one splitting coupler, four optical amplifiers, and four couplers. The embodiments of the present invention are used in a communications line architecture.

Abstract: A communications device is disclosed and includes: a first acquiring unit for acquiring first specific wavelength light and second specific wavelength light from a first optical path; a first receiving unit for converting the first specific wavelength light coming from the first acquiring unit into a first electrical signal; a first control unit for sending a first modulating signal to a first loopback unit according to the first electrical signal coming from the first receiving unit; and the first loopback unit for modulating the second specific wavelength light coming from the first acquiring unit according to the first modulating signal, and looping the modulated second specific wavelength light back to a second optical path, where a transmission direction of an optical signal in the second optical path is opposite to a transmission direction of an optical signal in the first optical path. The present invention further discloses a communications method.

Abstract: Embodiments of the present invention provide a reconfigurable optical add-drop multiplexer apparatus, and relate to the field of communications, so as to solve the problem of inconvenient line failure detection. The ROADM apparatus includes: a first ROADM, a second ROADM, one splitting coupler, four optical amplifiers, and four couplers. The embodiments of the present invention are used in a communications line architecture.

Abstract: A communications device is disclosed and includes: a first acquiring unit for acquiring first specific wavelength light and second specific wavelength light from a first optical path; a first receiving unit for converting the first specific wavelength light coming from the first acquiring unit into a first electrical signal; a first control unit for sending a first modulating signal to a first loopback unit according to the first electrical signal coming from the first receiving unit; and the first loopback unit for modulating the second specific wavelength light coming from the first acquiring unit according to the first modulating signal, and looping the modulated second specific wavelength light back to a second optical path, where a transmission direction of an optical signal in the second optical path is opposite to a transmission direction of an optical signal in the first optical path. The present invention further discloses a communications method.

Abstract: A scheduling method, apparatus, and system for avoiding a dual-end monitoring conflict for a submarine cable optical line are provided, where the method includes: sending a wavelength occupation request message to a peer-end equipment via a selected submarine cable optical line to be monitored, and receiving a wavelength occupation response message returned by the peer-end equipment; parsing the wavelength occupation response message to determine whether a requested wavelength is occupied by the peer-end equipment; and if the requested wavelength is occupied by the peer-end equipment and the wavelength can be switched, monitoring the selected submarine cable optical line to be monitored by using another wavelength after switching; and if the requested wavelength is not occupied by the peer-end equipment, monitoring the selected submarine cable optical line to be monitored by using the requested wavelength.

Abstract: The invention relates to a method and device for receiving and processing tire pressure signals. Said device comprises a first directional antenna, a second directional antenna, an amplifier, a signal converter and a micro-controller. The first directional antenna can be positioned near one of the front wheels of said vehicle, and its orientation points to another front wheel of said vehicle. The second directional antenna can be positioned near one of the rear wheels of said vehicle, said rear wheel and one of the front wheels are arranged diagonally, and the orientation of the second directional antenna points to another rear wheel of said vehicle. The amplifier can be connected to the first directional antenna and the second directional antenna to amplify the pressure signals transmitted by the transmitters and detected by the first directional antenna and the second directional antenna, respectively.

Abstract: The present invention discloses a RZ-DPSK modulated optical signal generation apparatus and method, wherein the apparatus comprises: a high speed multiplexer for amplifying a photo-electric converted high speed data signal and de-multiplexing it into parallel low speed signals, pre-coding the parallel low speed signals, then multiplexing the pre-coded low speed signals into a high speed data signal, inputting a processed data + and synchronous clock into a first RZ converter and amplifier, and inputting a pre-coded data ? and synchronous clock into a second RZ converter and amplifier; a first RZ converter and amplifier and a second RZ converter and amplifier for converting data + and data ? NRZ signals into RZ signals, then amplify them separately, and use the amplified RZ signal to drive a LiNbO3 modulator; a LiNbO3 modulator has differential inputs, when the CW laser emits optical power and transmits through the modulator, a RZ-DPSK modulated optical signal is obtained from the modulator output.