Title :
A micro GRIN-slab tip for integrated coupling between superfine-core waveguides and single-mode fibers
Author :
Shiraishi, Kazuo ; Tsai, Chen S. ; Yoda, Hidehiko ; Minagawa, Kazushi
Author_Institution :
Graduate Sch. of Eng., Utsunomiya Univ., Japan
Abstract :
A simple beam size converter using a micro GRIN slab tip with a hemi-cylindrical endface for highly coupling between single-mode fibers and small-core waveguides is presented. Formulas for design are given in closed forms. It has been confirmed experimentally that such micro slab tip is capable of converting the spot radius of a single-mode fiber into the size smaller than the wavelength of 1.55 μm.
Keywords :
gradient index optics; integrated optics; micro-optics; optical fibres; optical waveguides; 1.55 micron; beam size converter; hemi-cylindrical endface; integrated coupling; micro GRIN-slab tip; single-mode fibers; small-core waveguides; superfine-core waveguides; Composite materials; Finite difference methods; Optical collimators; Optical coupling; Optical propagation; Refractive index; Slabs; Structural engineering; Time domain analysis; Wavelength conversion;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on
Print_ISBN :
0-7803-7766-4
DOI :
10.1109/CLEOPR.2003.1274666
