A reflector assembly at a power beam receiver includes at least two sets of reflection surfaces positioned to shift some incoming light away from the center of the beam and towards the periphery. These surfaces may be positioned obliquely to one another, for example orthogonally. By shifting a portion of the power beam away from a higher-intensity center and toward a lower-intensity periphery, the reflector assembly may improve receiver efficiency without substantial redirection of power outside of a power-collecting surface of the receiver.

Provided is a communication system including a communication building side communication device in a communication building and a user's home side communication device in a user's home that are connected via an optical fiber and a metal cable. When a power fed to the user's home side communication device from a commercial power supply stops, the communication building side communication device feeds the power to the user's home side communication device via the metal cable to operate the user's home side communication device, and the user's home side communication device communicates with the communication building side communication device via the optical fiber.

Remote terminal field device monitoring using distributed fiber optic sensing (DFOS) comprising a length of optical sensor fiber extending into the remote terminal, said remote terminal including one or more field devices located therein, wherein said length of optical sensor fiber located in the remote terminal includes one or more fiber loops formed in the length of optical sensor fiber, said one or more fiber loops respectively positioned proximate to the one or more field device(s) located in the remote terminal, a DFOS interrogator in optical communication with the optical sensor fiber and configured to generate optical pulses, introduce the generated pulses into the length of optical sensor fiber, and receive backscattered signals from the one or more fiber loops formed in the length of the optical sensor fiber, and an intelligent analyzer configured to analyze DFOS data received by the DFOS interrogator and determine from the backscattered signals, environmental activity occurring at the one or more fiber loops located within the remote terminal; operating the DFOS system and collecting/analyzing/reporting the environmental activity determined at the one or more fiber loops located within the remote terminal.

Embodiments of this application disclose a converter and a transmission system that are configured to effectively ensure successful signal transmission between a network device and a terminal device. The converter is configured to connect to a first cable, the first cable is a photoelectric composite cable, and the first cable includes an optical fiber configured to transmit an optical signal with a passive optical network PON protocol format and a first transmission line configured to transmit a first power supply current. The first transmission line is connected to a conversion unit, the conversion unit is further configured to connect to a data interface, and the data interface is configured to transmit an electrical signal with a target protocol format.

Systems for low power distribution in a power distribution network (PDN) contemplate using multiple low-power conductors to convey power from a power source to a remote sub-unit. The multiple conductors are isolated from one another to help prevent overcurrent conditions in a fault condition. In a first exemplary aspect, the isolation is provided by galvanic isolation. In a second exemplary aspect, the isolation is provided by diodes at the remote sub-units. Further, current sensors may be used at the power source to detect if any of the multiple low-power conductors are carrying current above a defined threshold current. By providing one or more of these safety features, a multiplexer may not be needed at the remote sub-unit, thus providing cost savings while preserving the desired safety features.

A control device of modulating signal generates high-side signal and low-side signal. The high-side signal takes level in accordance with level of AC component of a monitor signal obtained by photoelectric conversion of modulated light, when the polarity of the AC component is positive, or its magnitude is zero. The high-side signal further takes constant level when the polarity of the AC component is negative. The low-side signal takes constant level when the polarity of the AC component is positive. The low-side signal further takes level in accordance with level of the AC component when the polarity of the AC component is negative, or its magnitude is zero. Then, the control device adjusts level of the modulating signal based on a greatest value of absolute values of levels taken by the high-side signal and a greatest value of absolute values of levels taken by the low-side signal.

An optical module, a communication device, and a Power over Ethernet (PoE) device are provided. The optical module includes a housing, an optical component, and a power supply component. The housing has a first socket and a second socket. The optical component also includes a first optical connector, an optical-to-electrical conversion component, and a second optical connector that are sequentially connected. The power supply component includes a first electrical connector, a power supply line, and a second electrical connector that are sequentially connected. The first socket is configured to insert a composite cable that matches the optical module. A power connector of the composite cable can be connected to the communication device by using the optical module, and the power connector of the composite cable does not need to be inserted into the communication device, so that panel space of the communication device can be reduced and miniaturization facilitated.

A load control device for controlling the power delivered from an AC power source to an electrical load is able to receive radio-frequency (RF) signals from a Wi-Fi-enabled device, such as a smart phone, via a wireless local area network. The load control device comprises a controllably conductive device adapted to be coupled in series between the source and the load, a controller for rendering the controllably conductive device conductive and non-conductive, and a Wi-Fi module operable to receive the RF signals directly from the wireless network. The controller controls the controllably conductive device to adjust the power delivered to the load in response to the wireless signals received from the wireless network. The load control device may further comprise an optical module operable to receive an optical signal, such that the controller may obtain an IP address from the received optical signal and control the power delivered to the load in response to a wireless signal received from the wireless network that includes the IP address.

A power distributor for a communications system for controlling delivery of electrical power drawn over a plurality of electrical communications connections allocated to respective customer premises equipment, to provide electrical power to network components within a network is arranged to control collection of electrical power to be drawn from each connection in accordance with power requirements of services operated by or for its respective customer premises equipment, independent of the identities of the electrical connections used to deliver those services. In particular when electrical connections are not being used by their respective customers they may instead be used by a beam-forming system to support improved service to a customer associated with a different connection, and the additional electrical power to power the beam-former is drawn from the connection associated with the customer receiving the enhanced service.

A system, and related methods and devices, is disclosed for increasing an output power of a frequency band in a distributed antenna system that includes at least one RXU module that is operatively coupled to at least one RAU module. A first group of the plurality of channels within a first frequency band may be allocated to the RAU module, and a second group of the plurality of the channels within the first frequency band may be allocated to the RXU module. The at least one RAU module may be configured to receive RF signals from the first group of the plurality of channels being used in the first frequency band, and the at least one RXU module may be configured to receive RF signals from the second group of the plurality of channels being used in the first frequency band. In this manner, the amount of composite power per channel is increased.