Disclosed herein are methods, devices, and systems for providing timing and bandwidth management of ultra-wideband, wireless data channels (including radio frequency and wireless optical data channels). According to one embodiment, a hub adapter includes a first high-speed computer peripheral interface, first digital circuitry coupled with the high-speed computer peripheral interface; and a first free-space-optical (FSO) transmitter coupled with the digital circuitry, and a first FSO receiver coupled with the digital circuitry. The first FSO transmitter is configured to transmit a data channel and an out-of-band control signal comprising timing information and bandwidth management information to a computer peripheral adapter and the data channel is configured to operate at a bit rate greater than 1 gigabits per second (Gbps).

Described are systems, devices, and techniques for extending wireless networks and associated systems, devices, and techniques for determination of optimal locations of a wireless range extender, such as by evalauating a quality of a wireless signal originating from a wireless gateway or access device and determining whether an alternative placement of a wireless range extender would result in improved quality. Also described are systems, devices, and techniques for automatically grouping multiple bands of a single wireless access device as well as systems, devices, and techniques that simplify connection of wireless devices to a wireless access device, such as by evaluating wireless messages transmitted on different bands to determine that the wireless messages originate from the same wireless access device.

Power saving is achieved in an optical wireless communication (VLC/LiFi) system by using a polling-based medium access control (MAC) scheme, wherein an access point can use a silent period when no one is polled (and EPs can thus sleep). When transmission queues are empty, the access point may apply the silent period which may be based on a minimum polling interval announced by broadcast.

The present invention relates to a method for optimizing performance of a multi-span optical fiber network. Each span has an associated optical transmission fiber connected to an associated optical amplifier. Gain and output power of the associated optical amplifier are respectively controlled independently. An amplifier noise figure respectively depends on the gain of the associated optical amplifier, with each associated optical amplifier further connected to launch optical signals into a remainder of a corresponding optical transmission line. The method includes the steps of for each span, computing the amplifier noise figure and a non-linear noise generated in the span based on information about the span and using the computed amplifier noise figure and the computed non-linear noise to compute an optimum launch power, and optimizing performance of the multi-span optical fiber network based on the computed optimum launch powers of all spans.

Apparatus for providing communication between ground-based User Equipment (UE) and at least one core network and a method for providing wireless communication between ground-based User Equipment (UE) and at least one core network are disclosed. The apparatus for providing communication between ground-based User Equipment (UE) and at least one core network comprises a plurality of low earth orbit satellites each comprising at least one satellite-based optical transmitter element and at least one satellite-based optical receiver element for providing at least one optical communication link; and at least one aerial vehicle comprising at least one aerial vehicle based optical transmitter element and at least one aerial vehicle based optical receiver element for providing at least one optical communication link and at least one directional antenna for providing a wireless communication link to a ground-based station and/or mobile UE.

Power saving is achieved in an optical wireless communication (VLC/LiFi) system by using a polling-based medium access control (MAC) scheme, wherein an access point can use a silent period when no one is polled (and EPs can thus sleep). When transmission queues are empty, the access point may apply the silent period which may be based on a minimum polling interval announced by broadcast.

Embodiments of an optical amplification apparatus are disclosed which include a first optical amplifier, a second optical amplifier, and a mode exchanger. The first optical amplifier is connected to an input port of the mode exchanger, and the second optical amplifier is connected to an output port of the mode exchanger. The first optical amplifier is configured to amplify optical signals carried in a plurality of transmission modes of a few-mode fiber, the plurality of transmission modes of the few-mode fiber may be grouped into N groups, each group includes two transmission modes, and N is a positive integer greater than or equal to 1. The mode exchanger is configured to exchange the two transmission modes carrying optical signals in each group. The second optical amplifier is configured to amplify the optical signals that are carried in the two transmission modes in each group and whose modes are exchanged.

The present invention provides an optical amplifier and a control method therefor, with which it is possible to stably control an optical amplifier that uses a multicore optical fiber. The optical amplifier uses, in a gain medium, a multicore optical fiber having a plurality of cores, and comprises: an input-light power monitor that monitors the optical power of input light to the plurality of cores of the multicore optical fiber; an output-light power monitor that monitors the optical power of medium-passed output light from the plurality of cores that has passed through the multicore optical fiber; a crosstalk monitor that monitors the amount of inter-core crosstalk among the plurality of cores; and a controller that controls the pump-light power of pump light superimposed on the input light to the plurality of cores on the basis of the monitored optical power of input light, the monitored optical power of output light, and the monitored amount of inter-core crosstalk.

The present invention relates to a method for optimizing performance of a multi-span optical fiber network. Each span has an associated optical transmission fiber connected to an associated optical amplifier. Gain and output power of the associated optical amplifier are respectively controlled independently. An amplifier noise figure respectively depends on the gain of the associated optical amplifier, with each associated optical amplifier further connected to launch optical signals into a remainder of a corresponding optical transmission line. The method includes the steps of for each span, computing the amplifier noise figure and a non-linear noise generated in the span based on information about the span and using the computed amplifier noise figure and the computed non-linear noise to compute an optimum launch power, and optimizing performance of the multi-span optical fiber network based on the computed optimum launch powers of all spans.

The present disclosure provides a method and a device for amplifying uplink light of a passive optical network, and a computer-readable storage medium. The passive optical network includes an optical network unit, an optical line terminal, and an optical amplifier provided between the optical network unit and the optical line terminal, and the method include: receiving a registration signal transmitted from the optical line terminal; determining a gain value of the optical amplifier, and performing gain value adjustment on the optical amplifier according to the determined gain value; and completing registration when an uplink optical signal transmitted to the optical line terminal through the optical amplifier reaches preset power.