Thermally tunable polarization by nanoparticle plasmonic resonance in photonic crystal fibers

Abstract

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 a x = l200dB/cm remarkably higher than the y-polarization mode. Moreover, high fiber birefringence and birefringence reversal is observed in the spectral region of the plasmon. References and links1. J. C. Knight, T. A. Birks, P. St. J. Russell, and D. M. Atkin, "All-silica single-mode optical fiber with photonic crystal cladding," Opt. Lett. 21, 1547Lett. 21, -1549Lett. 21, (1996.

Infiltrated Photonic Crystal Fibers for Sensing Applications

“…These effects could be used in high-resolution temperature sensors. In [235], a nanoparticle-doped PDMS sample is proposed to be infiltrated in a PCF. It produces a highly birefringent optical response and could be used as temperature sensor with a sensitivity of 0.053 nm/°C.…”

Anapole Modes in Hollow Nanocuboid Dielectric Metasurfaces for Refractometric Sensing

“…In parallel, significant attention has been directed to the study of the scattering properties of individual silicon nanoparticles [7,8,9], as potential building blocks in components compatible with silicon photonics technology. Silicon nanoparticles may support electric dipole resonances, which are very similar to plasmonic ones in metallic nanoparticles [10,11], with the advantage of avoiding thermal losses. Furthermore, magnetic resonances are also observed, which are relevant for several applications [12,13].…”