An all-fibre-optic Fourier transform spectrometer

In this spectrometer, optical retardation between the arms of a Mach-Zehnder interferometer made of single-mode optical fibre is modulated by variation of the fibre temperature. Spectra of a multimode laser diode and a broadband light source have been recorded. Frequency shifts within the observed s...

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Bibliographic Details
Published in:Measurement science & technology 1996-11, Vol.7 (11), p.1619-1630
Main Authors: Stelzle, Martin, Tuchtenhagen, Jürgen, Rabolt, John F
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fiber-optic instruments
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optical instruments, equipment and techniques
Physics
Visible and ultraviolet spectrometers
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Summary:In this spectrometer, optical retardation between the arms of a Mach-Zehnder interferometer made of single-mode optical fibre is modulated by variation of the fibre temperature. Spectra of a multimode laser diode and a broadband light source have been recorded. Frequency shifts within the observed spectra are due to frequency dispersion of the coefficient of dependence of the refractive index on temperature. An oversampling scheme utilizing a phase locked loop circuit has been successfully tested. (Abstract quotes from original text)
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/7/11/011