40 GHz Bandwidth and 64 GHz Resonance Frequency in Injection-Locked 1.55 [mu]m VCSELs

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...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2007-09, Vol.13 (5), p.1200-1208
Main Authors: Chrostowski, L, Faraji, B, Hofmann, W, Amann, M.-C., Wieczorek, S, Chow, W W
Format: Article
Language:English
Online Access:Get full text
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Summary: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.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2007.904417