D-Shaped Optical Fiber Microwire Devices

Abstract

D-shaped optical fiber microwire (OFM) devices are investigated theoretically. They can be fabricated by wrapping the OFM on a removable rod or substrate. Optical wave guiding properties of these devices are discussed with numerical simulations. Dispersion properties of OFMs with different radius are studied as well. A grating based D-shaped OFM is proposed for sensing applications. The corresponding sensitive could reach 1100 nm/RIU (Refractive Index Unit) due to its large outside evanescent field.