Title :
Integrated-optic 1*128 power splitter with multifunnel waveguide
Author :
Takahashi, Hiroshi ; Okamoto, Katsunari ; Ohmori, Yasuji
Author_Institution :
NTT Corp., Ibaraki, Japan
Abstract :
An integrated-optic 1*128 power splitter is demonstrated. It is composed of a slab waveguide, funnel-shaped waveguides, and output waveguides. Input light from a fiber is diffracted in the slab waveguide and received by funnel waveguides. To achieve uniform power splitting, the width of the funnel waveguides is designed based on the Gaussian diffraction pattern; that is the funnel widths increase progressively away from the center. The splitter is fabricated with GeO/sub 2/-doped silica waveguides on silicon. The 1*128 splitting is achieved with a low excess loss of 2.3 dB and a small standard deviation of 0.63 dB.<>
Keywords :
germanate glasses; integrated optics; light diffraction; optical losses; optical waveguides; 1 by 128; 2.3 dB; Gaussian diffraction pattern; Si; SiO/sub 2/GeO/sub 2/-Si; diffracted input light; excess loss; fiber; funnel widths; funnel-shaped waveguides; integrated-optic 1*128 power splitter; multifunnel waveguide; output waveguides; silica waveguides; slab waveguide; standard deviation; uniform power splitting; Electrons; Fabry-Perot; Optical arrays; Optical diffraction; Optical fiber networks; Optical reflection; Optical scattering; Optical waveguides; Silicon compounds; Slabs;
Journal_Title :
Photonics Technology Letters, IEEE
