Modeling of absorption data complicated by Fabry-Perot interference in germanosilicate thin-film waveguides

Kelly Potter, Joseph H. Simmons

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Complex absorption spectra obtained from thin films at normal incidence can be difficult to interpret owing to the appearance of Fabry-Perot interference fringes in the data. We describe a technique for modeling such spectra so that true absorption features can be identified and evaluated separately from the overlying fringes. The technique is used to interpret data obtained from photosensitive germanosilicate solgel films on fused-silica substrates but may be easily extended to analysis in other material systems.

Original languageEnglish (US)
Pages (from-to)268-272
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume13
Issue number2
StatePublished - Feb 1996
Externally publishedYes

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incidence
silicon dioxide
waveguides
absorption spectra
interference
thin films

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

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abstract = "Complex absorption spectra obtained from thin films at normal incidence can be difficult to interpret owing to the appearance of Fabry-Perot interference fringes in the data. We describe a technique for modeling such spectra so that true absorption features can be identified and evaluated separately from the overlying fringes. The technique is used to interpret data obtained from photosensitive germanosilicate solgel films on fused-silica substrates but may be easily extended to analysis in other material systems.",
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