Temperature effects on the emission of polymer optical fibers doped with Lumogen dyes

In this paper, we report the temperature effects on the luminescence of polymer optical fibers doped with Lumogen dyes (red and orange). Specifically, we have analyzed the intensity and the average wavelength of the spectra emitted by both fibers when they are heated from 30 degrees C to 90 degrees C. An almost full self-recovery of the signal in the fiber doped with Lumogen red has been observed when the fiber is subjected to thermal cycles with oscillating temperature variations between 30 degrees C and 90 degrees C. The emitted spectra are red/blue shifted when the fiber sample is heated/cooled with a final temperature sensitivity around 0.07 nm/degrees C when a stationary situation is reached.

Automated summary

This paper investigates the temperature effects on the luminescence of polymer optical fibers doped with Lumogen dyes. The results show that the fiber doped with Lumogen red almost fully recovers its signal when subjected to thermal cycles. The emitted spectra shift towards red or blue when the fiber sample reaches a stationary state, with a temperature sensitivity of approximately 0.07 nm/°C.