OPTICAL COMMUNICATION SYSTEM Russian patent published in 2019 - IPC G02F1/17 H04B10/40 

FIELD: optics.

SUBSTANCE: invention relates to systems of optical two-way communication between movable and fixed objects by means of tunable phase optical diffraction gratings and can be used in spheres critical to transmission and reception of information. Invention comprises an optical communication system comprising interrogator and transponder, interrogator comprises laser light source electrically connected to first control unit, first digital computer, electrically connected to information consumer and with optical system, and the transponder comprises a retro reflector electrically connected to the second digital computer, which is electrically connected to the information exchange unit and the second control unit. Retroreflector comprises angle reflector, photodetector, electronic unit, focusing lens and phase modulator of light. Focusing lens is directed to interrogator, and one or more faces of the angle reflector are in contact with the light phase modulator, having a series-arranged electroconductive layer, a transparent deformable layer, a gas gap, a control system comprising k pieces of electrodes, a dielectric substrate, wherein the electrically conductive layer is in optical contact with one of the faces of the angle reflector, and control system is electrically connected to signal source. Odd k_j electrodes of the control system are electrically connected to the grounded electrode of the signal source, and even k_{j + 1} electrodes of control system are electrically connected to signal source of signal source, at that grounded electrode of signal source in its turn is connected to one of electrodes of reference voltage source, and electrode of reference voltage source is electrically connected to electroconductive layer. Optical system comprises in series arranged on optical axis lens and photodetector, wherein the photodetector is electrically connected to the first amplifier, which is electrically connected through the first gain control with the first signal sampling unit, and the first signal digitization unit is electrically connected to the first digital computer. Electronic unit comprises second amplifier electrically connected to second gain control, wherein the second gain control is electrically connected to the second signal sampling unit, and the second signal sampling unit is electrically connected to the second digital computer.

EFFECT: technical result is faster operation, reliability and noise immunity.

1 cl, 7 dwg