Journal article
All-in-fibre Rayleigh-rejection filter for raman spectroscopy
An in-line Rayleigh-rejection filter for Raman spectroscopy is demonstrated. The device is based on a solid-core photonic crystal fibre infiltrated with a high-index liquid. At room temperature, the filter exhibits a full width at half maximum bandwidth of 143 nm and an insertion loss of 0.3 dB. A shift of 32 nm of the central wavelength is demonstrated by increasing the temperature from 22 to 70°C.
FEM simulations of the spectra at different temperatures showed good agreement with experimental results. The device was successfully employed to perform Raman spectroscopy of a sample of cyclohexane and allowed for a fourfold attenuation of the Rayleigh scattered light.
Language: | English |
---|---|
Publisher: | IET |
Year: | 2012 |
Pages: | 275-276 |
ISSN: | 1350911x and 00135194 |
Types: | Journal article |
DOI: | 10.1049/el.2011.2866 |
ORCIDs: | Rottwitt, Karsten |