Title :
High-frequency modulation characteristics of red VCSELs
Author :
Lehman, J.A. ; Morgan, R.A. ; Carlson, D. ; Crawford, M. Hagerott ; Choquette, K.D.
Author_Institution :
Honeywell Inc., Minneapolis, MN, USA
fDate :
2/13/1997 12:00:00 AM
Abstract :
The authors have measured small- and large-signal modulation response characteristics of a red VCSEL (λ=670 nm). A small-signal 3 dB bandwidth of 11 GHz was recorded at a bias current of 16 mA. The small-signal response for each bias current was fitted to an analytic model to determine the resonance and damping factor. From these data the differential gain coefficient and K-factor were estimated. Large signal digital measurements were conducted showing suitability of this device for data communication applications. An open eye diagram at the receiver output is presented with no pre-bias current applied and the VCSEL modulated at 155 Mbit/s demonstrating the possibility of direct logic-level drive
Keywords :
laser cavity resonators; optical modulation; optical receivers; semiconductor lasers; surface emitting lasers; 11 GHz; 155 Mbit/s; 16 mA; 670 nm; K-factor; VCSELs; bias current; damping factor; data communication applications; differential gain coefficient; direct logic-level drive; high-frequency modulation characteristics; open eye diagram; pre-bias current; receiver output; small-signal response;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970179
