Measurement and modeling of low-wavelength losses in silica fibers and their impact at communication Wavelengths

Anders Tegtmeier Pedersen, Lars Grüner-Nielsen, Karsten Rottwitt

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Using the cutback technique, the attenuation of four different silica step-index fibers is measured in the very wide wavelength range of 190-1700 nm. The measured spectra are deconvolved into components describing Rayleigh scattering, infrared losses, Urbach edge, anomalous loss, and different localized absorptions using a least squares fit. The evaluated Urbach edge is compared against results based on measurements on bulk glass samples and good agreement between the two is found. Furthermore, the Urbach edge is found to contribute significantly to the overall attenuation at communication wavelengths for two of the four fibers investigated.
Original languageEnglish
JournalJournal of Lightwave Technology
Volume27
Issue number10
Pages (from-to)1296-1300
ISSN0733-8724
DOIs
Publication statusPublished - 2009

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