▎ 摘　　要

NOVELTY - The system has a system main body provided with a common optical fiber, a graphene optical fiber and a distributed optical fiber vibration demodulation instrument, where length of the common optical fiber is about 5-80 cm. The graphene optical fiber is connected with the distributed optical fiber vibration demodulation instrument based on phase- optical time domain reflectometry (OTDR). The graphene optical fiber is formed with a graphene coating layer. An inner portion of the distributed optical fiber vibration demodulation instrument is provided with an ultra-narrow line width laser for emitting narrow light pulse. USE - Graphene optical fiber based distributed optical fiber temperature sensing system. ADVANTAGE - The system is inexpensive and easy to manufacture, and improves temperature sensitivity, temperature measuring precision and temperature response speed of a distributed optical fiber temperature sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of the Graphene optical fiber based distributed optical fiber temperature sensing system.