Attenuation investigation influenced by the temperature and strain in an optical fiber composite low voltage cable

Abstract

Optical fiber composite low voltage cable (OPLC) is an optimal way of connecting the smart grid with the load. In this paper, the field distribution of temperature and stress is simulated by applying the finite element method. At the overload condition, the fiber unit’s temperature rises to 59°C that generates the strain of 387 µε. This strain and temperature together result in the additional attenuation of 0.053 dB/km in the optical fiber. Temperature and strain are termed as the major contributing factors towards the attenuation in the optical fiber as temperature caused 16.03% while strain caused 80.56% of the total loss.

Improving Prediction Accuracy and Extraction Precision of Frequency Shift from Low-SNR Brillouin Gain Spectra in Distributed Structural Health Monitoring

“…This strategy is suitable for increasing accuracy in most cases. According to [ 48 ], a fibre extension of 1000 (0.1%) results in an increase of only 0.108 dB/km in line attenuation. So when the fibre is stretched by units or tens of , the spectrum will not be dramatically distorted.…”