Direct measurement of group dispersion of optical components using white-light spectral interferometry

• Autorzy: Chlebus R. , Hlubina P. , Ciprian D.
• Języki publikacji: EN

Abstrakty

EN

We present a simple white-light spectral interferometric technique employing a low-resolution spectrometer for a direct measurement of the group dispersion of optical components over a wide wavelength range. The technique utilizes an unbalanced Mach-Zehnder interferometer with a component under test inserted in one arm and the other arm with adjustable path length. We record a series of spectral interferograms to measure the equalization wavelength as a function of the path length difference. We measure the absolute group refractive index as a function of wavelength for a quartz crystal of known thickness and the relative one for optical fiber. In the latter case we use a microscope objective in front and a lens behind the fiber and subtract their group dispersion, which is measured by a technique of tandem interferometry including also a Michelson interferometer.

Słowa kluczowe

EN

spectral interferometry; white-light source; low-resolution spectrometer; Mach-Zehnder interferometer; group refractive index; dispersion; quartz crystal; holey fiber

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2007
• Tom: Vol. 15, No. 3
• Strony: 144--148
• Opis fizyczny: Bibliogr. 12 poz., wykr.

Twórcy

autor

Chlebus R.

autor

Hlubina P.

autor

Ciprian D.

• Departament of Physics, Technical University of Ostrawa, 17. listopadu 15, 708-33 Ostrava-Poruba, Czech Republic

Bibliografia

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• 8. P. Hlubina, "White-light spectral interferometry with the uncompensated Michelson interferometer and the group refractive index dispersion in fused silica", Opt. Commun. 193, 1-7 (2001).
• 9. P. Hlubina and W. Urbanczyk, "Dispersion of the group birefringence of a calcite crystal measured by white-light spectral interferometry", Meas. Sci. Technol. 16, 1267-1271 (2005).
• 10. P. Hlubina and I. Gurov, "Spectral interferograms including the equalization wavelengths processed by autoconvolution method", Proc. SPIE 5064, 198-205 (2003).
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• 12. P. Hlubina, D. Ciprian, and L. Knyblová, "Direct measurement of dispersion of the group refractive indices of quartz crystal by white-light spectral interferometry", Opt. Commun. 269, 8-13 (2007).