Investigation on the Multimode Dynamics of InGaAsP-InP Microring Lasers

A multimode model based on the rate equation approximation is presented in order to simulate the mode dynamics of 1.55-mum InGaAsP-InP microring lasers. A detailed characterization is performed including calculated optical spectra, time traces and relative intensity noise spectra. Different operatio...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2006-12, Vol.42 (12), p.1266-1273
Main Authors: Stamataki, I., Mikroulis, S., Kapsalis, A., Syvridis, D.
Format: Article
Language:English
Subjects:
Applied sciences
Bidirectional
Bidirectional operation
Buses (vehicles)
Circuit properties
Dynamics
Electric, optical and optoelectronic circuits
Electronics
Equations
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
Laser modes
Laser noise
Lasers
Low-frequency noise
Mathematical analysis
Mathematical models
Microcavity and microdisk lasers
microring lasers
mode hopping
Nonlinear optics
Optical and optoelectronic circuits
Optical noise
Optical waveguides
Optics
Physics
Reflectivity
Ring lasers
Spectra
unidirectional operation
Waveguide transitions
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Summary:A multimode model based on the rate equation approximation is presented in order to simulate the mode dynamics of 1.55-mum InGaAsP-InP microring lasers. A detailed characterization is performed including calculated optical spectra, time traces and relative intensity noise spectra. Different operation regimes are observed, bidirectional multimode with/without alternate oscillations, unidirectional single mode, bidirectional single mode and mode hopping. The boundaries of the above operation regimes are investigated with respect to the current level, bus waveguide reflectivity and ring radius. Varying the current level a transition from multimode to single mode and eventually mode hopping operation is observed. Increasing the bus waveguide reflectivity a transition from unidirectional to bidirectional operation is revealed, while the use of nonequal reflectivities between the two facets, promotes unidirectional operation. Moreover, the ring radius is proved to be a critical parameter for the extent of each operation regime since it directly influences the modal wavelength separation
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2006.884578