| Title | Characteristics of the Brillouin spectra in Erbium-Ytterbium fibers. | | Author(s) | Canat G, Durécu A, Lesueur G, Lombard L, Bourdon P, Jolivet V, Jaouën Y | | Institution | ONERA,DOTA, Chemin de la Hunière, 91761 Palaiseau CEDEX France. guillaume.canat@onera.fr | | Source | Opt Express 2008 Mar 3; 16(5):3212-22. | | Abstract | This paper reports the main characteristics of the Stokes spectra for typical pumped and unpumped Erbium-Ytterbium doped fibers. Doped fibers show shorter Brillouin shifts and their spectra are up to 1.6 times broader than undoped fibers. Those spectra are composed of several peaks originating from several longitudinal acoustic modes. The effective Brillouin gain of the secondary modes can be as large as 20% of the main peak gain. They can merge into a more complex structure for the largest cores. Simulations allow to relate these characteristics to the influence of codoping and index profile inhomogeneity. An additional broadening of the Stokes spectrum in pumped fibers is reported and attributed to thermal effects. | | Language | eng | | Pub Type(s) | Journal Article
Research Support, Non-U.S. Gov't
| | PubMed ID | 18542409 |
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