Title :
Mitigation of dispersion-induced effects using SOA in analog optical transmission
Author :
Jeon, Duk-Ho ; Jung, Hyun-Do ; Han, Sang-Kook
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
A novel technique to improve an analog optical transmission performance by reducing both the nonlinearity and chromatic dispersion induced carrier suppression has been proposed. The intrinsic nonlinear distortion component of Mach-Zehnder modulator (MZM) was reduced by gain saturation characteristics of semiconductor optical amplifier (SOA). The composite triple beat (CTB) of MZM was reduced as much as 9 dB at the quadratic bias point and the following enhancement of dynamic range by 4.5 dB was obtained. The RF carrier suppression for the transmission length and operating frequency was reduced by a negative chirp characteristic of semiconductor optical amplifier (SOA) and the enhancement of CTB after transmission were also achieved as a result of the linearization using SOA.
Keywords :
electro-optical modulation; optical fibre communication; optical fibre dispersion; semiconductor optical amplifiers; Mach-Zehnder modulator; RF carrier suppression; SOA; analog optical transmission; chromatic dispersion induced carrier suppression; composite triple beat; dispersion-induced effects mitigation; dynamic range; gain saturation characteristics; intrinsic nonlinear distortion component; linearization; negative chirp characteristic; nonlinearity; operating frequency; quadratic bias point; semiconductor optical amplifier; transmission length; Chromatic dispersion; Dynamic range; Nonlinear distortion; Nonlinear optical devices; Nonlinear optics; Optical distortion; Optical modulation; Optical saturation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1022006
