6533b850fe1ef96bd12a8498
RESEARCH PRODUCT
Experimental analysis of distributed pump absorption and refractive index changes in Yb-doped fibers using acousto-optic interaction.
Miguel V. AndrésE. P. Alcusa-saezAntonio Diezsubject
Materials scienceOptical fibergenetic structuresbusiness.industryPhysics::OpticsCladding modeCladding (fiber optics)Graded-index fiberAtomic and Molecular Physics and Opticslaw.inventionNormalized frequency (fiber optics)Double-clad fiberOpticslawOptoelectronicssense organsStep-index profilebusinessPhotonic-crystal fiberdescription
In-fiber acousto-optic interaction is used to characterize the refractive index changes at the C band in a single-mode ytterbium-doped optical fiber under 980 nm pumping. The transmission notch created by the acoustic-induced coupling between the core mode and a cladding mode shifts to longer wavelengths when the pump is delivered to the fiber. The electronic contribution to the refractive index change is quantified from the wavelength shift. Using a time-resolved acousto-optic method, we investigate the distribution of pump absorption, and the resulting refractive index change profile, along sections of ytterbium-doped fiber exceeding 1 m long under different pump power levels.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-02-17 | Optics letters |