Title :
A modal-field transformer for LD modules
Author :
Ogura, Akira ; Shiraishi, Kazuo
Author_Institution :
Fac. of Eng., Utsunomiya Univ., Japan
Abstract :
An effective modal field transformer is proposed and its experimental performance is reported. The graded-index oval-core (GIO) fiber is fabricated by making use of a plastic fiber. A circular field has been converted into an elliptic one that has an aspect ratio of 3.2. The GIO fiber promises efficient coupling from laser diodes that have highly elliptical fields to single-mode fibers as a new type of lensed fiber
Keywords :
gradient index optics; integrated optics; laser beams; laser modes; optical fibre couplers; optical fibre fabrication; semiconductor lasers; 1.55 mum; LD modules; aspect ratio; circular field conversion; efficient coupling; graded-index oval-core fiber; highly elliptical fields; lensed fiber; modal field transformer; plastic fiber; single-mode fibers; Circuits; Diode lasers; Laser excitation; Optical devices; Optical fiber amplifiers; Optical fiber devices; Plastics; Refractive index; Semiconductor optical amplifiers; Splicing;
Conference_Titel :
LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5634-9
DOI :
10.1109/LEOS.1999.812007
