FIBER OSCILLATOR WITH CASCADE RESONATOR SYSTEM Russian patent published in 2022 - IPC H04B10/00 

FIELD: laser technology.

SUBSTANCE: invention relates to laser technology. The fiber oscillator contains two sources of optical pumping and two series-connected linear resonators made of elements preserving polarization. Two linear fiber resonators are formed by the connection of three Bragg gratings, the maxima of the reflection spectrum of which are shifted relative to each other in the spectral region. Between the Bragg gratings there are sections of reinforcing fiber, fiber couplers and fiber systems for optical pumping into a fiber laser resonator. Sources of optical pumping are semiconductor laser diodes of continuous radiation.

EFFECT: ensuring guaranteed stable generation of ultrashort optical pulses, increasing the width of the optical spectrum of the generated pulses and ensuring the reliability of the design.

1 cl, 2 dwg