FIELD: transmission of optical signals. SUBSTANCE: pumping energy with wave length (λн) which is below wave length (λs) of optical signal is conveyed from pumping laser across section of transmission with the aid of communication element. With rise of pumping power received optical signal moderates, signals with higher frequencies moderate sharply. EFFECT: provision for correction of spectrum inclination during transmission of high -speed optical signals. 27 cl, 10 dwg
