An imbalance in the modulation voltages for the two branches of a Mach-Zehnder (MZ) modulator causes frequency chirp. In combination with optical cavities, fiber dispersion, or EDFA gainslope, this chirp introduces distortion in analog lightwave CATV systems. We have derived expressions for the freq
Theoretical analysis of distortion effects in analog externally modulated lightwave systems
β Scribed by S. Betti; M. Giaconi
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 109 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0895-2477
- DOI
- 10.1002/mop.1216
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A theoretical model is presented for the performance evaluation of multichannel systems based on an electroβoptic external modulator. It is able to explain the asymptotic behavior of the signalβtoβintermodulation ratio against modulating signal power. In particular, it is verified that, above a given threshold value, the useful signal is deeply stifled, while the distortions maintain constant. The model provides a simple method to calculate such a threshold value, above which the system performance is fully degraded.βΒ© 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 30: 46β48, 2001.
π SIMILAR VOLUMES
The performance of hybrid multichannel AMrQAM fiber-optic transmission systems based on the subcarrier multiplexing ( ) SCM technique is sensibly constrained by intermodulation distortions of the laser diode, which must be suitably considered to select system parameters. In this letter, an analytica