Influence of electrical parasitics and drive impedance on the laser modulation response
2004 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 16, no 1, 21-23 p.Article in journal (Refereed) Published
In this letter, we analyze the effects of electrical parasitics and drive impedance on the laser modulation response. It is found that for lasers with small active-region volume, e.g., vertical-cavity surface-emitting lasers, the finite drive impedance and/or the laser parasitic capacitance can significantly enhance the damping of the laser resonance peak at low bias. This is due to the voltage fluctuations across the laser diode active layer during modulation. It is also shown that the real pole of the small-signal response transfer function corresponding to the laser parasitic cutoff frequency is not fixed but decreases with the increased bias level.
Place, publisher, year, edition, pages
2004. Vol. 16, no 1, 21-23 p.
laser dynamics, laser modeling, rate equations, quantum-well lasers, equivalent-circuit
IdentifiersURN: urn:nbn:se:kth:diva-23076DOI: 10.1109/lpt.2003.819404ISI: 000187885800007ScopusID: 2-s2.0-0346707366OAI: oai:DiVA.org:kth-23076DiVA: diva2:341774
QC 201008272010-08-102010-08-102010-08-27Bibliographically approved