▎ 摘　　要

NOVELTY - The system has a single chip (15) receiving analog/digital (A/D) conversion circuits (11) and generating a control signal. An optical delay line (12) receives the control signal via a RS232 interface (16) for delay feedback so that the system is in chaotization state. One end of the delay line is connected with one way of an optical cable coupler (3) in laser polarization cavity. Another end of the delay line is connected with a grapheme mode-locking device (9). Two sides of the mode-locking device are provided with a grapheme sheet and optical fiber connectors. USE - Graphene-based passive mode-locking optical fiber laser delay feedback chaotization system. ADVANTAGE - The system can generate femtosecond optical pulse, and ensures easy synchronization and high peak power value of output pulse. The system is simple in structure and easy to install and operate, can realize optical fiber integration, and can create foundation for chaos synchronization and secrete communication. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene-based passive mode-locking optical fiber laser delay feedback chaotization system.'(Drawing includes non-English language text)' Optical cable coupler (3) Grapheme mode-locking device (9) Analog/digital conversion circuits (11) Optical delay line (12) Single chip (15) RS232 interface (16)