Navin J. Manjooran

New fabrication technique for random-hole optical fibers

A new type of optical fiber waveguide utilizing random holes in the cladding region has recently been fabricated. These random hole optical fibers (RHOFs) rely on holes that are random in both size and spatial location to confine light to the central core region. In this paper, a new technique to fabricate the holes in the cladding region will be presented. The holes are formed in-situ during the fiber drawing process. The new technique reported in this paper utilizes a material, which oxidizes to form a very large amount of “bubbles” at the temperature of the fiber draw. During the fiber drawing process, these bubbles are then drawn out into small diameter tubes within the fiber. By controlling the fabrication conditions, the amount, size, and spatial location of the porosity within the fiber can be controlled. The technique of fabrication and optical as well as SEM micrographs of the resulting structures will be discussed.

Advances in Synthesis, Processing, and Applications of Nanostructures: Ceramic Transactions

Preface vii CONTROLLED SYNTHESIS, PROCESSING AND APPLICATIONS OF STRUCTURAL AND FUNTIONAL NANOMATERIALS Effect of Annealing and Transition Metal Doping on Structural, Optical and Magnetic Properties of ZnO Nanomaterial 3 Navendu Goswami Chemical Vapor Deposition Growth of Graphene Encapsulated Palladium Nanoparticles 17 Junchi Wu and Nitin Chopra Well Adhered, Nanocrystalline, Photoactive, Ti02, Thin Films Dip-Coated On Corona-Treated Poly(Ethylene Terephthalate) by Modified Sol-Gel Processing at ~95 C and Drying at ~130 C 31 H.C. Pham, D.A.H. Hanaor, U.M. Cox, and C.C. Sorrell Large-Scale Synthesis of MoS2-Polymer Derived SiCN Composite Nanosheets 45 R. Bhandavat, L. David, U. Barrera, and G. Singh Synthesis of Ti02/Sn02 Bifunctional Nanocomposites 53 Huaming Yang and Chengli Huo Fabrication of Porous Mullite by Freeze Casting and Sintering of Alumina-Silica Nanoparticles 57 Wenle Li, Margaret Anderson, Kathy Lu, and John Y. Walz Low Temperature Sintering of a Gadolinium-Doped Ceria for Solid Oxide Fuel Cells 65 Pasquale F. Lavorato, and Leon L. Shaw NANOTECHNOLOGY FOR ENERGY, HEALTHCARE, AND INDUSTRY Current Status and Prospects of Nanotechnology in Arab States 79 Bassam Alfeeli, Ghada Al-Naqi, and Abeer Al-Qattan Finite Element Modeling for Mode Reduction in Bundled Sapphire Photonic Crystal Fibers 93 Neal T. Pfeiffenberger and Gary R. Pickrell p-Type Silicon Optical Fiber 103 Brian Scott, Ke Wang, Adam Floyd, and Gary Pickrell Synthesis and Characterization of Cobalt Aluminate and Fe203 Nanocomposite Electrode for Solar Driven Water Splitting to Produce Hydrogen 109 Sudhakar Shet, Kwang-Soon Ahn, Yanfa Yan, Heli Wang, Nuggehalli Ravindra, John Turner, and Mowafak Al-Jassim Influence of Substrate Temperature and RF Power on the Formation of ZnO Nanorods for Solar Driven Hydrogen Production 115 Sudhakar Shet, Heli Wang, Yanfa Yan, Nuggehalli Ravindra, John Turner, and Mowafak Al-Jassim Porous Material Fabrication using Ice Particles as a Pore Forming Agent 121 Samantha Smith and Gary Pickrell Random-Hole Optical Fiber Sensors and Their Sensing Applications 129 Ke Wang, Brian Scott, Neal Pfeiffenberger, and Gary Pickrell Wetting Properties of Silicon Incorporated DLC Films on Aluminum Substrate 135 Tae Gyu Kim, Van Cao Nguyen, Hye Sung Kim, Soon-Jik Hong, and Ri-ichi Murakami Nanoporous Ag Prepared by Electrochemical Dealloying of Melt-Spun Cu-Ag-Si Alloys 141 Guijing Li, FeiFei Lu, Linping Zhang, Zhanbo Sun, Xiaoping Song, Bingjun Ding, and Zhimao Yang Effect of Film Thickness on Electrical and Optical Properties of ZnO/Ag Dual Layer Film 149 Hiromi Yabe, Eri Akita, Pangpang Wang, Daisuke Yonekura, Ri-ichi Murakami, and Xiaoping Song Author Index 157