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Proceedings Paper

Broadband optical filters in spectroscopy
Author(s): Robert J. Nordstrom
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Paper Abstract

Many applications for spectroscopy in on-line chemical monitoring do not require high resolution. For these cases, optical filters can be useful and cost-effective. To cover a spectral region using filters, the traditional method has been to select a set of non-overlapping filters. With this set, the instruments can monitor the optical power in each small spectral element. The disadvantage to this approach is the poor peak transmittance characteristics of narrow band filters. This paper discusses the use of overlapping broadband filters to accomplish the task of spectral measurement over the same total spectral region. Greater optical throughput and signal-to-noise ratio can be achieved.

Paper Details

Date Published: 26 February 1999
PDF: 7 pages
Proc. SPIE 3537, Electro-Optic, Integrated Optic, and Electronic Technologies for Online Chemical Process Monitoring, (26 February 1999); doi: 10.1117/12.341024
Show Author Affiliations
Robert J. Nordstrom, MediSpectra, Inc. (United States)


Published in SPIE Proceedings Vol. 3537:
Electro-Optic, Integrated Optic, and Electronic Technologies for Online Chemical Process Monitoring
Mahmoud Fallahi; Mahmoud Fallahi; Robert J. Nordstrom; Terry R. Todd, Editor(s)

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