Structure of the fiber-optic recirculating loop memory with periodic 2R-regeneration of information flow in the optical range is designed. The modified optical fiber loop mirror for 2R-regeneration of wavelength division multiplexed return-to-zero signals is proposed. On the basis of the proposed mathematical model, using numerical modeling, the efficiency of the restoration of optical information pulses using a nonlinear optical loop mirror (NOLM) is shown. The dependences of the restoration of the signals to the required values in duration and power on the variable parameters of the NOLM (the gain of the fiber-optic erbium amplifier and the length of the nonlinear optical fiber) are obtained for 10 Gbit/s wavelength channels.