期刊
LASER & PHOTONICS REVIEWS
卷 7, 期 5, 页码 818-829出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201300036
关键词
Microcircular laser; mode quality factor; direct modulation; semiconductor laser
资金
- National Nature Science Foundation of China [61235004, 61006042, 61106048, 61061160502, 61021003]
- High Technology Development Project [2012AA012202]
Semiconductor microcircular lasers have been investigated as potential light sources for photonic integrated circuits and optical interconnections for more than two decades. However, the direct modulation bandwidths of the circular microlasers remain a challenge, especially when being compared with other microlasers, such as photonic crystal lasers. In this paper, microcircular lasers connected to an output waveguide are investigated for high-speed direct modulation with optimized mode Q factors. Small signal modulation with a resonance frequency of f(R) = 12.5 GHz is realized for a AlGaInAs/InP circular microlaser with a radius of 10 mu m at 290 K. Furthermore, clear eye diagrams are observed at 12.5 Gbit/s for a 15-mu m radius circular microlaser with f(R) = 6.9 GHz.
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