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Title: An optical fibre technique for measuring optical absorption by chromophores in the presence of scattering particles
Contributor(s): Bunganaen, Y (author); Lamb, David  (author)
Publication Date: 2005
DOI: 10.1088/1742-6596/15/1/012
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Abstract: The evanescent radiation field associated with a suitably-prepared silica optical fibre, whereby the outer cladding has been removed and the core immersed in a liquid, has been investigated for its applicability as a device for measuring the spectral absorption of a liquid containing both chromophore and suspended scattering material. It is found that the evanescent radiation field adjacent to the core-liquid boundary interacts with chromophores in a liquid in much the same way as radiation does when directed, unbound, through a cuvette containing the same liquid in an optical spectrophotometer. However, the small penetration depth of the evanescent field, of the order of one micron, results in a sensor which is found to be insensitive to light-scattering particulate matter than was present in the liquid.
Publication Type: Journal Article
Source of Publication: Journal of Physics: Conference Series, v.15, p. 67-73
Publisher: Institute of Physics Publishing Ltd
Place of Publication: Bristol, United Kingdom
ISSN: 1742-6596
Field of Research (FOR): 020504 Photonics, Optoelectronics and Optical Communications
Socio-Economic Outcome Codes: 960909 Mountain and High Country Land and Water Management
960905 Farmland, Arable Cropland and Permanent Cropland Water Management
960903 Coastal and Estuarine Water Management
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article

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