Abstract
Optical FDM and FSK systems require frequency tunable lasers with large and flat FM response magnitude and phase. Such lasers include frequency tunable two-electrode DFB lasers,1 which have been used recently in FSK based communcation systems.2 These lasers with two active sections have a larger FM bandwidth than tunable three-electrode DBR lasers with a modulated passive section, where the modulation rate is limited to ~200 Mbit/s.3 We characterized two-electrode DFB lasers for use in FSK systems by measuring the FM response magnitude and FSK spectra at various modulation rates. We subsequently relate these characteristics to bit-error-rate (BER) measurements in a noncoherent detection communication system in which the FSK signal is converted to an ASK format by an optical filter.4 Thus we relate directly basic device characteristics of these lasers to system performance.
© 1990 Optical Society of America
PDF ArticleMore Like This
A. E. WILLNER, I. P. KAMINOW, M. KUZNETSOV, J. STONE, and L. W. STULZ
CWI3 Conference on Lasers and Electro-Optics (CLEO:S&I) 1990
A. E. Willner, M. Kuznetsov, I. P. Kaminow, U. Koren, T. L. Koch, C. A. Burrus, and G. Raybon
TUP3 OSA Annual Meeting (FIO) 1989
Y. Twu, N. K. Dutta, J. D. Wynn, C. Y. Kuo, and E. J. Wagner
TUP2 OSA Annual Meeting (FIO) 1989