Title :
Propagating mode analysis and design of waveguide parameters of GI POF for very short-reach network use
Author :
Ohdoko, Kunihiro ; Ishigure, Takaaki ; Koike, Yasuhiro
Author_Institution :
Dept. of Appl. Phys. & Physico-Informatics, Keio Univ., Yokohama, Japan
Abstract :
We investigated the way to reduce the mode coupling (the energy transfer among the propagating modes) in a multimode fiber. It strongly influences the bandwidth in the graded-index plastic optical fiber (GI POF), and it was found that the mode-coupling strength in the GI POF depended on the numerical aperture of the fiber. Moreover, we propose a new optimum waveguiding design of GI POFs when only small mode groups are launched [under filled launch condition (UFL)], which is expected in a real high-speed GI POF link. We demonstrate greater than 1-GHz transmission by a 250-m polymethylmethacrylate (PMMA-d8)-based GI POF under the UFL condition.
Keywords :
gradient index optics; high-speed optical techniques; optical design techniques; optical fibre couplers; optical fibre networks; optical polymers; optical waveguide theory; 1 GHz; 250 m; energy transfer; graded index fiber; high-speed GI POF link; mode coupling; mode coupling strength; multimode fiber; numerical aperture; optimum waveguiding design; plastic optical fiber; polymethylmethacrylate; propagating mode analysis; small mode groups; under filled launch condition; very short-reach network; waveguide design; waveguide parameters; Apertures; Bandwidth; Energy exchange; Optical coupling; Optical fibers; Optical waveguides; Plastics; Refractive index; Silicon compounds; Wavelength measurement; Graded-index plastic optical fiber (GI POF); mode coupling; numerical aperture (NA); under filled launch condition (UFL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.837258
