Abstract: The Network of Power Fiber to the Home is a scene where optical fiber composite low- voltage cable is used to realize optical and cable transmission. The cable temperature will cause fiber attenuation because the optical fiber composite low-voltage cable is made up of optical fiber and cable. In serious cases, it can lead to network outage. Therefore, optical fiber attenuation can be used to monitor cable temperature abnormality in real time and carry out overheat warning.

Key words: PowerOptical Fiber to theHome, optical fiber composite low-voltage cable, overheat warning