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20 Gb/s direct modulation of 980 nm VCSELs based on submonolayer deposition of quantum dots

: Hopfer, F.; Mutig, A.; Fiol, G.; Kuntz, M.; Mikhrin, S.S.; Krestnikov, I.L.; Livshits, D.A.; Kovsh, A.R.; Bornholdt, C.; Shchukin, V.; Ledentsov, N.N.; Gaysler, V.; Zakharov, N.D.; Werner, P.; Bimberg, D.


Fonjallaz, P.-Y. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Europe, Cardiff; European Photonics Industry Consortium -EPIC-:
Workshop on Optical Components for Broadband Communication : 28 - 29 June 2006, Stockholm, Sweden
Bellingham, WA: SPIE, 2006 (SPIE Proceedings Series 6350)
ISBN: 0-8194-6445-7
Art. 635003
Workshop on Optical Components for Broadband Communication <2006, Stockholm>
Conference Paper
Fraunhofer HHI ()

980 nm vertical-cavity surface-emitting laser based on sub-monolayer growth of quantum dots show at 25 and 85°C for 20 Gb/s without current adjustment clearly open eyes and error free operation with bit error rates better than 10-12. For these multimode lasers the small signal modulation bandwidth decreases only from 15 GHz at 25°C to 13 GHz at 85°C. Single mode devices demonstrate at 20°C a small signal modulation bandwidth of 16.6 GHz with 0.8 mW optical output power and a record high modulation current efficiency factor of 19 GHz/mA1/2.