Abstract
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.
Original language | English |
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Article number | 5446332 |
Pages (from-to) | 321-329 |
Number of pages | 9 |
Journal | IEEE Photonics Journal |
Volume | 2 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2010 |
Keywords
- Gain lever
- Modulation bandwidth
- Quantum dot
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering