Abstract:

In this paper，the optical-fiber temperature sensor experiment is modified by using a

cheap commer- cial fiber splitter at 1310 nm and aluminum foil for thermal conducting. The

temperature coefficient is measured and found to be more stable after improvement. Also，the

conducting condition can infect the temperature coefficient a lot. At last，teaching

suggestion is proposed.

Key words: optical-fiber temperature sensor, optical fiber splitter, temperature coefficient