Research On Fabrication Of Group-? Semiconductor Core Optical Fibers

Glass-clad semiconductor core optical fibers have been the subject of much recent interest for novel optoelectronic applications including nonlinear fiber optics and infrared power delivery.Semiconductor materials have their unique advantages,such as: extended infrared transparency,photoelectric effect,high Raman gain coefficient,large optical nonlinearities.They have important application prospect in biological sensing,photoelectric devices,Raman laser.Incorporating new kinds of materials with different physical and chemical properties and functional microstructures into the fiber geometry,which paving the way to a new generation of multi-material fibers endowed with optical,thermal and electronic properties.This research focuses on multi-material and multi-functional optical fibers based on group ? semiconductor.By comparing the properties of different core and cladding materials,and analyzing the physical and chemical properties of the core materials,appropriate glass cladding materials are selected.Glass-clad silicon core fibers,germanium-core fibers and Ge-Si alloy optical fibers were successfully fabricated by the molten core method.The left core diameter of the double silicon core fiber is 10.2 ?m,and the core ellipticity is 0.9%;the right core diameter is 36 ?m,and the core ellipticity is 1.0%.In this paper,group ? semiconductor core optical fibers are realized by molten core method.By adjusting the content of germanium and silicon,Ge-Si alloy optical fibers with adjustable physical properties is obtained,which provides new opportunities for fiber-shaped optoelectrical devices.