Enhancing the 3-dB Bandwidth via the Gain-Lever Effect in Quantum-Dot Lasers

Autor: Y. Li, N. A. Naderi, V. Kovanis, L. F. Lester
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: IEEE Photonics Journal, Vol 2, Iss 3, Pp 321-329 (2010)
Druh dokumentu: article
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2010.2046481
Popis: We investigate the small-signal modulation response of two-section, gain-lever, quantum-dot semiconductor lasers. A three-pole modulation function is derived from a 3-D set of rate equations, and a 70% 3-dB bandwidth enhancement is computed and experimentally realized in an undoped quantum-dot gain-lever laser under extreme asymmetric-bias conditions. Finally, it is demonstrated that the 3-dB bandwidth is three times the free-running relaxation oscillation frequency in these types of laser structures, as opposed to 1.55 times in the case of conventional single-section lasers.
Databáze: Directory of Open Access Journals
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