Properties of Raman spectra and laser-induced birefringence in polymethyl methacrylate optical fibres

Abstract

Raman spectra from polymethyl methacrylate (PMMA) core polymer optical fibres (POFs) in the 200–6800 cm−1 range were investigated using an Ar+ ion laser. Raman peak shifting and Raman spectra broadening were observed and analysed in the POFs.