Title :
Changing multimode dispersive fibers into single-mode fibers by annealing and guided mode analysis of annealed fibers
Author :
Nishimura, Junji ; Morishita, Katsumi
Author_Institution :
Osaka Electro-Commun. Univ., Japan
fDate :
6/1/1998 12:00:00 AM
Abstract :
Dispersive fibers whose refractive index differences change greatly with wavelength are fabricated from optical glasses with different index dispersions. The fibers have several guided modes, and are changed into single-mode fibers by annealing under suitable conditions. The number of guided modes is investigated by measuring the bending loss and the mode lines of annealed dispersive fibers. The annealed single-mode fibers support only the fundamental mode over broad spectral ranges and no second guided mode at any wavelength
Keywords :
annealing; optical fibre dispersion; optical fibre fabrication; optical fibre theory; refractive index; annealed fibers; annealing; bending loss; broad spectral ranges; fundamental mode; guided mode analysis; mode lines; multimode dispersive fibers; optical fibre fabrication; optical glasses; refractive index differences; single-mode fibers; Annealing; Dispersion; Glass; Optical fiber couplers; Optical fiber devices; Optical filters; Optical refraction; Optical variables control; Refractive index; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
