Minimizing fiber dispersion effects in double Fourier stellar interferometers

Details Minimizing fiber dispersion effects in double Fourier stellar interferometers Minimizing fiber dispersion effects in double Fourier stellar interferometers

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2476...86c&link_type=abstract

Proc. SPIE Vol. 2476, p. 86-95, Fiber Optics in Astronomical Applications, Samuel C. Barden; Ed.

Physics

Optics

Scientific paper

One of the problems encountered when using single-mode fibers in a wideband interferometer is the dispersion of the waveguide. By optimizing the waveguide structure for an actual fluoride glass, a fiber can be made whose dispersion between 2 micrometers and 2.7 micrometers is reduced by more than two orders of magnitude. Simulated interferograms show that an interferometer using such a fiber could withstand a fiber length difference of 10m without a substantial degradation of its performances. This raises the possibility to consider all-fiber delay lines with several meters of optical path delay variation.

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