MODEL OF THE OPTICAL LOGIC GATE ON THE BASIS OF PPLN FROM LITHIUM NIOBATE WITH GRADIENT OF COMPOSITION

Modeling researches of influence of profiles of an indicator of refraction are carried out in work on efficiency of real-ization of logic elements on PPLN from gradient lithium niobate. At decrease in efficiency of realization of logic func-tions for PPLN from gradient crystal in comparison with an idealized situation of a zero mismatch of group speeds of entrance channels the pass-band of such converter becomes wider. Markets of PPLN-converters from gradient’s lithi-um niobate crystals are experimentally received.