Title :
Fiber dispersion induced nonlinearity in fiber-optic links with multimode laser diodes
Author :
Hunziker, S. ; Baechtold, W.
Author_Institution :
Lab. for EM Fields & Microwave Electron., Swiss Federal Inst. of Technol., Zurich, Switzerland
fDate :
3/1/1997 12:00:00 AM
Abstract :
In analog RF fiber-optic (FO) links with directly modulated multimode laser diodes (LD´s), nonlinear distortions of the received modulation signal occur due to fiber dispersion. Using a simple analytical two mode model, we show that the mutual compensation of strong nonlinearities between particular modes breaks down at high-modulation frequencies. The effect can be observed even in 1300-nm links with single-mode (SM) standard fibers. Simulations as well as measurements of intermodulation (IM) illustrate this argument.
Keywords :
compensation; intermodulation; laser modes; modelling; nonlinear optics; optical fibre dispersion; optical modulation; optical transmitters; semiconductor lasers; analog RF fiber-optic links; analytical two mode model; directly modulated multimode laser diodes; fiber dispersion; fiber dispersion induced nonlinearity; fiber-optic links; high-modulation frequencies; intermodulation; multimode laser diodes; mutual compensation; nm links; nonlinear distortions; received modulation signal; single-mode standard fibers; strong nonlinearities; Chirp modulation; Delay effects; Diode lasers; Frequency modulation; Intensity modulation; Nonlinear distortion; Optical fiber theory; Optical modulation; Samarium; Transfer functions;
Journal_Title :
Photonics Technology Letters, IEEE
