METHOD OF OPTICAL MODE MULTIPLE TIME COHERENCE FORMATION AND RELATED DEVICE FOR ITS REALISATION Russian patent published in 2008 - IPC G01S17/88 

FIELD: physics.

SUBSTANCE: coherent mode is transformed to range of spaced intrafibre mode component, consecutive multiple, in process of that modes are phase shifted with increase in arithmetic progression, and integrated in composite modes. Total number of multiple transformations of intrafibre modes and total time shift of mode front of initial wave are set considering value not lower than preset limit. Thus arithmetic progression transformation steps form increasing sequence in which smallest term does not exceed duration of coherent wave source train, and each consequent is equal to maximum time shift of mode front in transformation corresponding to the previous term of sequence. And depending on impossibility or possibility of uniform initial mode power distribution between spaced intrafibre mode components, smoothing consecutive multiple transformations are additionally applied or are not applied while having the same operation pattern as other transformations do and used to perform relative time shift of intrafibre mode component by half of time power distribution non-uniformity. Related device consists of series wave source, optical junction device, input fibre-optical coupler, smoothing multiple circuits. All multiple circuits have the same pattern and consist of parallel fibre-optical delay lines and connected through input ports of port fibre-optical coupler. Thus power transmission magnifier has provided channels of input fibre-optical coupler in the form of multicore-fibre cable separate fibres of which are connected to input ports of first mulptiple circuits.

EFFECT: provided transformation of coherent properties of optical radiation.

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