A modulating circuit adapted to modulate between an energy harvesting mode and a wireless transmitter mode is disclosed which includes a solar cell, an energy-harvesting circuit, a first switch coupling the solar cell to the energy harvesting circuit and controlled by a first control line, a second switch coupling the solar cell to a programmable current source and controlled by a second control line, a transmitter/energy harvesting mode circuit adapted to select between a transmitter mode and an energy harvesting mode, and a symbol-to-current mapping circuit adapted to encode data to be communicated by the solar cell, the symbol-to-current mapping circuit adapted to adjust the programmable current source to thereby provide a metered current to the solar cell.

Aspects relate to a photonic processing system, a photonic processor, and a method of performing matrix-vector multiplication. An optical encoder may encode an input vector into a first plurality of optical signals. A photonic processor may receive the first plurality of optical signals; perform a plurality of operations on the first plurality of optical signals, the plurality of operations implementing a matrix multiplication of the input vector by a matrix; and output a second plurality of optical signals representing an output vector. An optical receiver may detect the second plurality of optical signals and output an electrical digital representation of the output vector.

An underwater optical communication system (100) is provided with a first optical communication device (1) that includes a first filter (12), a second optical communication device (2) that includes a second filter (22) and performs bi-directional optical communication with the first optical communication device. The first filter is configured to selectively transmit light of a predetermined wavelength band including a second wavelength (41) but not including a first wavelength (40). The second filter is configured to selectively transmit light of a predetermined wavelength band including the first wavelength but not including the second wavelength.

MicroLEDs may be used in providing intra-chip optical communications and/or inter-chip optical communications, for example within a multi-chip module or semiconductor package containing multiple integrated circuit semiconductor chips. In some embodiments the integrated circuit semiconductor chips may be distributed across different shelves in a rack. The optical interconnections may make use of optical couplings, for example in the form of lens(es) and/or mirrors. In some embodiments arrays of microLEDs and arrays of photodetectors are used in providing parallel links, which in some embodiments are duplex links.

An apparatus, system and method for providing an optical coupler. The optical coupler may be a miniature fiber optic coupler, which may include: a housing having dimensions of less than 4 mm×4 mm×4 mm; an input into the housing capable of receiving a fiber optic sending line; a sending line prism having dimensions of less than 2 mm×2 mm within the housing in optical communication with the sending line; a receiving line prism having dimensions of less than 2 mm×2 mm in optical communication with the sending line prism at a corresponded angle in a range of 30 to 60 degrees and capable of receiving a signal incoming on the sending line and redirecting the received signal; and a receiving line in optical communication with the receiving line prism and capable of receiving and outputting the redirected received signal.

In order to readily carry out communication between terminal stations, a submarine optical communication system includes a first terminal station including a first monitoring means for monitoring the signal quality of dummy light a first dummy light source that outputs dummy light to the second terminal station, and a first light transmitting means for transmitting an optical signal to the second terminal station, the optical signal including a first signal quality of the dummy light; and the second terminal station including a second dummy light source that outputs dummy light to the first monitoring means, a second monitoring means for monitoring the signal quality of the dummy light, and a light receiving means for receiving the optical signal.

In order to readily carry out communication between terminal stations, a submarine optical communication system includes a first terminal station including a first monitoring means for monitoring the signal quality of dummy light a first dummy light source that outputs dummy light to the second terminal station, and a first light transmitting means for transmitting an optical signal to the second terminal station, the optical signal including a first signal quality of the dummy light; and the second terminal station including a second dummy light source that outputs dummy light to the first monitoring means, a second monitoring means for monitoring the signal quality of the dummy light, and a light receiving means for receiving the optical signal.

This application discloses a LiDAR adjustment method, circuit, and apparatus, a LiDAR, and a storage medium. The method is applied to the LiDAR having a photoelectric sensor, and the method includes: obtaining an operating temperature of the photoelectric sensor; determining a target bias voltage based on the operating temperature, where the target bias voltage is a difference between voltages applied to a cathode and an anode of the photoelectric sensor; and based on the target bias voltage, adjusting the voltages applied to at least one of the anode and the cathode of the photoelectric sensor.

This application discloses a LiDAR adjustment method, circuit, and apparatus, a LiDAR, and a storage medium. The method is applied to the LiDAR having a photoelectric sensor, and the method includes: obtaining an operating temperature of the photoelectric sensor; determining a target bias voltage based on the operating temperature, where the target bias voltage is a difference between voltages applied to a cathode and an anode of the photoelectric sensor; and based on the target bias voltage, adjusting the voltages applied to at least one of the anode and the cathode of the photoelectric sensor.

A device for enhanced microwave permeability through a coated transparent substrate includes a first surface of the device and a second surface of the device each forming an exterior boundary of the device. The device includes a first section extending through the device from the first surface to the second surface. The first section enhances a permeability of a first microwave band through the coated transparent substrate. The device also includes a second section extending through the device from the first surface to the second surface. The second section enhances a permeability of a second microwave band through the coated transparent substrate. The device further includes a third section extending through the device. The third section includes a location where the first section and the second section merge. The third section enhances a permeability of a third microwave band through the coated transparent substrate.