Paul, Mukul Chandra and Kir'yanov, A and Das, Shyamal and Pal, Mrinmay and Bhadra, Shyamal Kumar and Barmenkov, Y and Martinez-Gamez, A and Martínez, J L and Yoo, S and Sahu, J (2012) Nano-engineered glass based optical fiber for fiber laser. In: 3rd International Conference on Photonics, ICP 2012, 1 - 3 October, 2012, Penang.

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We have developed the technology for making of dielectric nano-particles doped nano-engineered glass based optical fibers. Two kinds of dielectric nano-particles (DNP) containing silica glass based Yb2O3 doped fibers are made successfully through solution doping (SD) technique. One: Yb2O3 doped yttria-rich alumino-silica nano-particles based optical fiber developed during drawing of D-shaped low RI resin coated large mode area (LMA) optical fiber from the modified preform which annealed at 1450-1550°C for 3 hours under heating and cooling rates of 20°C/min and other: Yb2O3 doped zirconia-germanium-alumino (ZGA) rich yttria-silica nano-particles based optical fibers developed during drawing of normal RI coated single mode optical fiber from the modified preform which annealed at 1000-1100°C for 3 hours under heating and cooling rates of 20°C/min. Fabrication of Yb2O3 doped yttria-rich alumino-silica nano-particles based D-shaped low RI coated large core optical fibers having core diameter around 20.0-30.0 micron was made. The size of DNP nano-particles was maintained within 5-10 nm under doping of 0.20 mole of fluorine. The start fiber preforms are studied by means of EPMA, EDX, and electron diffraction analyses, revealing phase-separated nano-sized ytterbium-rich areas in their cores. There is a great need to engineer the composition as well as doping levels of different elements within the core glass during the preform making stages to generate phase-separated Yb 2O3 doped DNP nano particles in the fiber. The matter concentrates on making of Yb2O3 doped DNP containing optical fibers along with material characterizations, study of spectroscopic properties, photo-darkening phenomena and lasing characteristics. Such kind of nano-engineered glass based optical fibers shows good lasing efficiency with improved photodarkening phenomena compared to the standard silica glass based fiber. © 2012 IEEE.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conference of 3rd International Conference on Photonics, ICP 2012; Conference Date: 1 October 2012 through 3 October 2012; Conference Code: 94810; DOI:10.1109/ICP.2012.6379894
Uncontrolled Keywords: As doping; Core diameters; Doped fiber; Electron diffraction analysis; Fiber preforms; Heating and cooling rates; Large core; Large mode area; Lasing characteristics; Lasing efficiency; Material characterizations; Single-mode optical fiber; Solution doping; Spectroscopic property, Cooling; Fiber lasers; Fibers; Fluorine; Germanium; Glass; Nanoparticles; Optical fibers; Photonics; Preforming; Separation; Silica; Ytterbium; Yttrium alloys; Zirconia, Optical fiber fabrication
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 07 Feb 2013 13:19
Last Modified: 07 Feb 2013 13:19

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