File Name: ultra low loss and long length photonic crystal fiber .zip
Handbook of Photonics for Biomedical Engineering pp Cite as. Photonic crystal fibers PCFs are newly emerging optical fibers that present a diversity of new features beyond what conventional optical fibers can provide. Owing to their unique geometric structure and light-guiding properties, PCFs show an outstanding potential for microliter- or even nanoliter-volume biosensing purposes. In this chapter we briefly review applications of PCFs for developing compact and robust biosensors. This research subject has recently invoked much attention due to the gradually maturing fabrication techniques of fiber microstructures, as well as development of surface processing technique enabling activation of fiber microstructures with functional materials. Particularly, we consider two sensor types: surface-modified and unmodified PCF biosensors. For the first sensor type, we focus mainly on biomolecule-decorated microstructures and metalized air hole arrays.
Photonic-crystal fiber PCF is a class of optical fiber based on the properties of photonic crystals. It was first explored in at University of Bath, UK. Because of its ability to confine light in hollow cores or with confinement characteristics not possible in conventional optical fiber, PCF is now finding applications in fiber-optic communications , fiber lasers , nonlinear devices, high-power transmission, highly sensitive gas sensors, and other areas. More specific categories of PCF include photonic-bandgap fiber PCFs that confine light by band gap effects , holey fiber PCFs using air holes in their cross-sections , hole-assisted fiber PCFs guiding light by a conventional higher-index core modified by the presence of air holes , and Bragg fiber photonic-bandgap fiber formed by concentric rings of multilayer film. Photonic crystal fibers may be considered a subgroup of a more general class of microstructured optical fibers , where light is guided by structural modifications, and not only by refractive index differences. Optical fibers have evolved into many forms since the practical breakthroughs that saw their wider introduction in the s as conventional step index fibers   and later as single material fibers where propagation was defined by an effective air cladding structure.
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Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Nielsen and C. Jacobsen and N.
Show all documents Low-Flattened Dispersion Hexagonal Photonic Crystal Fiber With Low Confinement Loss Flattened near-zero dispersion over a broad spectral range was recently reported in a PCF using a similar technique with five air-hole rings with different diameters in the hexagonal arrangement . Despite notable dispersion characteristics in prior theoretical predictions, such PCFs have not been successfully fabricated due to their strict requirements meticulous control and maintenance of the whole geometry with a very low tolerance.
Index Terms—Optical attenuation, photonic crystal fiber (PCF), wavelength-division multiplexing (WDM), 8. 10 Gbit/s. I. INTRODUCTION. OPTICAL fibers with silica.
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