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 |
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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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