All-fiber spectral filtering with solid core photonic band gap Bragg fibers

Abstract

We report on intensely colored solid core all-polymer Bragg fibers, with a large diameter PMMA core surrounded by alternating PMMA/PS layers. Modifying reflector layer thickness illustrates that bandgap position can be adjusted in the visible.

Nanotechnology in Textiles

“…This, generally, may not be accomplished by traditional yarn-spinning methods such as melt-spinning, wet-spinning, or electrospinning, , which are typically utilized to produce fibers and yarns with simple structures in textile manufacturing. Moreover, materials including biofunctional polymers, − low-melting-temperature metal alloys, optical plastics, − conductive polymers, − and electrochemical materials − could be integrated into a composite fiber during drawing.…”

“…Bragg fibers, a subset of photonic band gap fibers, have a hollow or solid core surrounded by periodic dielectric nanolayers with high- and low-refractive indexes (Figure a). − Recently, two methodologies have been reported for the fabrication of the all-polymer hollow-core Bragg fiber preforms . One approach utilized consecutive deposition of layers of two different polymers by solvent evaporation inside a rotating polymer cladding tube.…”

“…Spectral position of the band gap was affected by the core refractive index and multilayer geometry. Thus, a band gap guidance mechanism renders Bragg fibers suitable for application in spectral filtering, 118,119 optical sensing, 117,[119][120][121]164 and photonic textiles. 116,122,152 The key feature of band gap guidance of a Bragg fiber is wavelength filtering.…”