Title :
A new lensed-fiber configuration employing cascaded GI-fiber chips
Author :
Shiraishi, Kazuo ; Kuroo, Shin-Ichi
Author_Institution :
Fac. of Eng., Utsunomiya Univ., Japan
fDate :
6/1/2000 12:00:00 AM
Abstract :
A new scheme is proposed for lensed fibers having high coupling efficiency between laser diodes and single-mode fibers with a long working distance. The new lensed fiber consists of a pair of GI-fiber tips having different focusing parameters. The measured net coupling loss between a laser diode operating at a wavelength of 1.3 /spl mu/m and a single-mode fiber is as low as 1.5 dB. The working distances are around 50 /spl mu/m, much longer than those of conventional lensed fibers.
Keywords :
gradient index optics; optical fibre communication; optical fibre couplers; optical fibre losses; optical focusing; semiconductor lasers; 1.3 mum; cascaded GI-fiber chips; focusing parameters; high coupling efficiency; laser diode; laser diodes; lensed-fiber configuration; long working distance; net coupling loss; single-mode fiber; single-mode fibers; working distances; Diode lasers; Fiber lasers; Joining processes; Lenses; Loss measurement; Optical coupling; Optical fiber devices; Optical fiber losses; Optical fibers; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
