40 GHz Bandwidth and 64 GHz Resonance Frequency in Injection-Locked 1.55 #956;m VCSELs

Title40 GHz Bandwidth and 64 GHz Resonance Frequency in Injection-Locked 1.55 #956;m VCSELs
Publication TypeJournal Article
Year of Publication2007
AuthorsChrostowski, L., B. Faraji, W. Hofmann, M. - C. Amann, S. Wieczorek, and W. W. Chow
JournalSelected Topics in Quantum Electronics, IEEE Journal of
Pagination1200 -1208
Date Publishedsep.
Keywordsbandwidth 40 GHz, frequency 10 GHz to 60 GHz, frequency 64 GHz, frequency response, Injection locking, laser mode locking, laser resonance frequency, light polarisation, polarization modes, rate equation model, Semiconductor lasers, surface emitting lasers, VCSEL, Vertical cavity surface emitting lasers, wavelength 1.55 mum

Injection locking is shown to greatly enhance the resonance frequency of 1.55 mum vertical-cavity surface-emitting lasers (VCSELs), from 10 to 60 GHz, under ultrahigh injection locking conditions. Using injection locking to increase the laser resonance frequency, together with a low parasitic VCSEL design, a 3 dB bandwidth of over 40 GHz was attained, a record broadband performance for directly modulated VCSELs. VCSELs with slightly detuned polarization modes are injection locked with controlled polarization angles. For the first time, a dual-resonance frequency response is observed, and is explained with a two polarization-mode injection-locked rate equation model.


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