Title :
Dispersion-induced composite second-order distortion at 1.5 mu m
Author :
Bergmann, E.E. ; Kuo, C.Y. ; Huang, S.Y.
Author_Institution :
AT&T Bell Lab., Breinigsville, PA, USA
Abstract :
Experimental and theoretical results have shown that the composite second-order (CSO) nonlinearity of 1.5- mu m AM analog laser links is inadvertently affected by the coupling of laser chirp with fiber dispersion in regular single-mode fiber. To counteract the dispersion effect, it is shown that dispersion-shifted fiber can be employed in place of the regular fiber. Other possible ways to reduce distortion are to use lasers with reduced chirp, presumably with a multiquantum-well laser structure, or lasers with well-controlled spatial hole burning. Short fiber spans (>
Keywords :
nonlinear optics; optical dispersion; optical fibres; optical hole burning; optical links; 1.5 micron; AM analog laser links; CATV channels; composite second order nonlinearity; composite second-order distortion; dispersion-shifted fiber; fiber amplifiers; fiber dispersion; laser chirp; loop distribution; multiquantum-well laser structure; short fiber spans; single-mode fiber; spatial hole burning; Chirp; Distortion measurement; Distributed feedback devices; Erbium-doped fiber lasers; Frequency modulation; Laser feedback; Laser modes; Laser noise; Laser theory; Optical modulation;
Journal_Title :
Photonics Technology Letters, IEEE
