Abstract
Compared to edge-emitting lasers VCSELs have a higher FM modulation cut-off frequency in the range of several 10 kHz [1, 4] as well as a higher current tuning coefficient. Furthermore, a slope of approximately −1/2 in doubly logarithmic scale of the FM amplitude response was observed up to 1 MHz [1]. To explain the unique frequency response of the laser FM tuning, physically motivated models exist for DFB lasers as well as VCSELs [2, 3]. The VCSEL model yields an asymptotic slope of −1/2 for high frequencies as a result of the model assumption of an infinitely thin active region which is in agreement with the aforementioned measurement data. Although VCSELs have rather thin structures, a deviation from this “square root” behaviour is expected at high modulation frequencies, which is investigated in this paper.
© 2009 IEEE
PDF ArticleMore Like This
F.H. Peters, V. Jayaraman, M.H. MacDougal, and D. Van Deusen
CPD1.9 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 1998
K. L. Lear, V. M. Hietala, H. Q. Hou, J. Banas, B. E. Hammons, J. Zolper, and S. P. Kilcoyne
UC2 Ultrafast Electronics and Optoelectronics (UEO) 1997
C. J. Chang-Hasnain, J. P. Harbison, C. E. Zah, L. T. Florez, N. C. Andreadakis, and T. P. Lee
TuF3 Optical Fiber Communication Conference (OFC) 1991