نتایج جستجو برای: pipe cladding

تعداد نتایج: 20088  

Journal: :Optics express 2007
Juejun Hu Ning-Ning Feng Nathan Carlie Laeticia Petit Jianfei Wang Anu Agarwal Kathleen Richardson Lionel Kimerling

We experimentally demonstrate, for the first time, propagation loss reduction via graded-index (GRIN) cladding layers in high-index-contrast (HIC) glass waveguides. We show that scattering loss arising from sidewall roughness can be significantly reduced without compromising the high-index-contrast condition, by inserting thin GRIN cladding layers with refractive indices intermediate between th...

Journal: :Optics express 2013
Myung-Ki Kim Zheng Li Kun Huang Ryan Going Ming C Wu Hyuck Choo

We propose a cladding engineering method that flexibly modifies the radiation patterns and rates of metal-clad nanoscale optical cavity. Optimally adjusting the cladding symmetry of the metal-clad nanoscale optical cavity modifies the modal symmetry and produces highly directional radiation that leads to 90% coupling efficiency into an integrated waveguide. In addition, the radiation rate of th...

Journal: :Optics letters 2011
Qiang Wu Yuliya Semenova Binbin Yan Youqiao Ma Pengfei Wang Chongxiu Yu Gerald Farrell

A refractive index (RI) sensor based on a novel fiber structure that consists of a single-mode-multimode-single-mode (SMS) fiber structure followed by a fiber Bragg grating was demonstrated. The multimode fiber in the SMS structure excites cladding modes within output single-mode fiber (SMF) and recouple the reflected cladding Bragg wavelength to the input SMF core. By measuring the relative Br...

2006
Huan Qi Jyotirmoy Mazumder

The coaxial laser cladding process is the heart of direct metal deposition DMD . Rapid materials processing, such as DMD, is steadily becoming a tool for synthesis of materials, as well as rapid manufacturing. Mathematical models to develop the fundamental understanding of the physical phenomena associated with the coaxial laser cladding process are essential to further develop the science base...

Journal: :JOURNAL OF THE JAPAN WELDING SOCIETY 2008

2009
P. Singh A. Kumar V. Rastogi A. Agrawal B. M. A. Rahman

We analyze an elliptical core segmented cladding fibre using the vector finite element method (FEM) and show that the segmented cladding can effectively control the birefringence of the fibre. The analysis should be useful for fibre-based polarization controlling devices and single-polarization devices.

2015
Wonseok Shin Shanhui Fan

Articles you may be interested in High efficiency coupling of radio frequency beams from the dual frequency gyrotron with a corrugated waveguide transmission system Rev. Dual cylindrical metallic grating-cladding polymer hollow waveguide for terahertz transmission with low loss Appl. Magnetic metal cladding gives better attenuation in small waveguides operating at high microwave frequencies tha...

Journal: :Development 2009
Zhenyu Zhang Xianjun Zhu Leslie M Stevens David Stein

Spatially regulated transcription of the pipe gene in ventral cells of the Drosophila ovary follicle cell epithelium is a key event that specifies progeny embryo dorsal-ventral (DV) polarity. pipe encodes ten putative protein isoforms, all of which exhibit similarity to vertebrate glycosaminoglycan-modifying enzymes. Expression of one of the isoforms, Pipe-ST2, in follicle cells has previously ...

Journal: :Genetics and molecular research : GMR 2015
H Wu G H Liu Q Wu B Yu

We prepared a bone scaffold material comprising a PLGA/β-TCP core and a Type I collagen cladding, and recombined it with bone marrow stroma stem cells (BMSCs) to evaluate its potential for use in bone tissue engineering by in vivo and in vitro experiments. PLGA/β-TCP without a cladding was used for comparison. The adherence rate of the BMSCs to the scaffold was determined by cell counting. Cell...

Journal: :Optics express 2016
Mateusz Śmietana Marcin Koba Predrag Mikulic Wojtek J Bock

In this work we report experimental results on optimizing the refractive index (RI) sensitivity of long-period gratings (LPGs) by fiber cladding etching and thin aluminum oxide (Al2O3) overlay deposition. The presented LPG takes advantage of work in the dispersion turning point (DTP) regime as well as the mode transition (MT) effect for higher-order cladding modes (LP...

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