Journal
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
Volume 10, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/10/5/055303
Keywords
polymer optical fibre; Raman spectrum; scattering cross section; gain coefficient
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Polymethyl methacrylate ( PMMA) optical fibres are fabricated by a preform drawing process. The Raman spectra of PMMA fibres are recorded using a diode pumped solid state laser emitting at 532 nm and a CCD-spectrograph in the 400-3800 cm(-1) range. The variation of the Raman intensity with the length of the optical fibre is studied. Investigations are carried out on the variation of FWHM of the Raman peak at 2957 cm(-1) with the length of the optical fibre and pump power. The differential scattering cross section and gain coefficient of the Raman peak at 2957 cm(-1) in PMMA are calculated in relation to that of toluene.
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