title: Thermally tunable polarization by nanoparticle plasmonic resonance in photonic crystal fibers.
abstract: A photonic crystal fiber selectively filled with silver nanoparticles dispersed in polydimethylsiloxane has been numerically studied via finite elements analysis. These nanoparticles possess a localized surface plasmon resonance in the visible region which depends on the refractive index of the surrounding medium. The refractive index of polydimethylsiloxane can be thermally tuned leading to the design of polarization tunable filters. Filters found with this setup show anisotropic attenuation of the x-polarization fundamental mode around α(x) = 1200dB/cm remarkably higher than the y-polarization mode. Moreover, high fiber birefringence and birefringence reversal is observed in the spectral region of the plasmon.
authors.forename: David
authors.initials: D
authors.lastname: Poudereux
authors.forename: Manuel
authors.initials: M
authors.lastname: Caño-García
authors.forename: José F
authors.initials: JF
authors.lastname: Algorri
authors.forename: Braulio
authors.initials: B
authors.lastname: García-Cámara
authors.forename: José M
authors.initials: JM
authors.lastname: Sánchez-Pena
authors.forename: Xabier
authors.initials: X
authors.lastname: Quintana
authors.forename: Morten A
authors.initials: MA
authors.lastname: Geday
authors.forename: José M
authors.initials: JM
authors.lastname: Otón