A system may include a laser source, an acousto-optic modulator (AOM) coupled to the laser source, an atom trap, and at least one optical medium coupled between the AOM and the atom trap. Furthermore, at least one piezoelectric transducer may be coupled to the at least one optical medium, and a beam polarization controller may be coupled to the at least one piezoelectric transducer.

A system may include a laser source, an acousto-optic modulator (AOM) coupled to the laser source, an atom trap, and at least one optical medium coupled between the AOM and the atom trap. Furthermore, at least one piezoelectric transducer may be coupled to the at least one optical medium, and a beam polarization controller may be coupled to the at least one piezoelectric transducer.

A system may include a laser source, an acousto-optic modulator (AOM) coupled to the laser source, an atom trap, and at least one optical medium coupled between the AOM and the atom trap. Furthermore, at least one piezoelectric transducer may be coupled to the at least one optical medium, and a beam polarization controller may be coupled to the at least one piezoelectric transducer.

A system may include a laser source, an acousto-optic modulator (AOM) coupled to the laser source, an atom trap, and at least one optical medium coupled between the AOM and the atom trap. Furthermore, at least one piezoelectric transducer may be coupled to the at least one optical medium, and a beam polarization controller may be coupled to the at least one piezoelectric transducer.

The present disclosure relates to the field of optical communications. A board is disclosed. The board includes a level adjustment circuit, a detection apparatus, and a control apparatus. The detection apparatus is configured to: when the detection apparatus is connected to an optical module, receive an indication signal output by an upstream optical signal detection pin; continuously detect a received first level signal and the received indication signal. If there is a second level signal, opposite to the first level signal, the detection apparatus notifies the control apparatus that the optical module is inserted. If there is no second level signal in the signal received within the preset duration, the detection apparatus notifies the control apparatus that the optical module is absent. This makes the optical module less dependent on the in-position pin, and decreases a quantity of pins of the optical module.

The present disclosure relates to the field of optical communications. A board is disclosed. The board includes a level adjustment circuit, a detection apparatus, and a control apparatus. The detection apparatus is configured to: when the detection apparatus is connected to an optical module, receive an indication signal output by an upstream optical signal detection pin; continuously detect a received first level signal and the received indication signal. If there is a second level signal, opposite to the first level signal, the detection apparatus notifies the control apparatus that the optical module is inserted. If there is no second level signal in the signal received within the preset duration, the detection apparatus notifies the control apparatus that the optical module is absent. This makes the optical module less dependent on the in-position pin, and decreases a quantity of pins of the optical module.

A system may include a laser source, an acousto-optic modulator (AOM) coupled to the laser source, an atom trap, and at least one optical medium coupled between the AOM and the atom trap. Furthermore, at least one piezoelectric transducer may be coupled to the at least one optical medium, and a beam polarization controller may be coupled to the at least one piezoelectric transducer.

A system may include a laser source, an acousto-optic modulator (AOM) coupled to the laser source, an atom trap, and at least one optical medium coupled between the AOM and the atom trap. Furthermore, at least one piezoelectric transducer may be coupled to the at least one optical medium, and a beam polarization controller may be coupled to the at least one piezoelectric transducer.

A point-of-sale terminal differentiates dynamically among different data streams by processing data encoded with sentinels that bracket the beginning and end of the data and identify the type of data.

This application discloses an optical computing apparatus and method, and relates to the field of optical processing technologies. The apparatus implements two-dimensional Fourier transform of input data. The apparatus includes a beam splitting phase shift module and a beam combination module. The beam splitting phase shift module is configured to receive a plurality of input optical signals that indicate input data, and output a plurality of groups of intermediate optical signals based on the plurality of input optical signals. The beam combination module is configured to obtain a plurality of output optical signals based on the plurality of groups of intermediate optical signals, where output data indicated by the plurality of output optical signals is data obtained through two-dimensional Fourier transform performed on the input data.