METHOD OF STABILIZING PARAMETERS OF OUTPUT OPTICAL RADIATION OF STRONG SPONTANEOUS EMISSION SOURCE

摘要

FIELD: optics.;SUBSTANCE: invention relates to fibre-optic sources of reinforced spontaneous emission. Method solves the problem of stabilization in the temperature range of several parameters of the output optical radiation of the enhanced spontaneous emission source, which is constructed from a two-pass scheme with two-sided pumping of the active fibre doped with erbium ions by two laser diodes, in particular power and central wavelength or power and width of spectrum. Method of stabilizing parameters of output optical radiation of a source of amplified spontaneous emission in the operating temperature range consists in preliminary measurement of dependence of parameters of output optical radiation, in particular, central wavelength and spectrum width at constant power thereof, from source temperature and pumping factor equal to ratio of optical powers of co-directed pumping to sum of co-directional and anti-directional pumping of erbium ion doped fibre, with preset constant output optical radiation power P_out, with subsequent approximation of the obtained or data array polynomial by a method of least squares, based on the user specified value of the central wavelength or spectrum width and the current temperature of the enhanced spontaneous emission source. Based on the obtained polynomial, in the amplified spontaneous emission source, the pumping factor is calculated, at that, the installed levels of the co-directional and counter-directed pumping provide the specified constant level of power of the output optical radiation by means of proportional-integral control.;EFFECT: technical result consists in enabling stabilization of several parameters of output optical radiation of a strong spontaneous emission source.;1 cl, 6 dwg