Nonlinear Dynamics of Semiconductor Lasers Under Repetitive Optical Pulse Injection

In this paper, nonlinear dynamics of semiconductor lasers under repetitive optical pulse injection are studied numerically. Different dynamical states, including pulsation and oscillation states, are found by varying the intensity and the repetition rate of the injection pulses. The laser is found t...

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Published inIEEE journal of selected topics in quantum electronics Vol. 15; no. 3; pp. 604 - 611
Main Authors Lin, Fan-Yi, Tu, Shiou-Yuan, Huang, Chien-Chih, Chang, Shu-Ming
Format Journal Article
LanguageEnglish
Published New York IEEE 01.05.2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Carbon monoxide
Chaos
Chaos theory
Chaotic communication
Frequency
Laser mode locking
Nonlinear dynamics
Nonlinear optics
nonlinear systems
Optical attenuators
Optical feedback
Optical pulses
Optical receivers
Optical transmitters
Oscillations
Pulsation
Repetition
Semiconductor lasers
Winding
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Summary:In this paper, nonlinear dynamics of semiconductor lasers under repetitive optical pulse injection are studied numerically. Different dynamical states, including pulsation and oscillation states, are found by varying the intensity and the repetition rate of the injection pulses. The laser is found to enter the chaotic pulsation (CP) states and chaotic oscillation (CO) states through individual period-doubling routes. Mapping and corresponding Lyapunov exponents of these dynamical states are plotted and examined in the parameter space. Moreover, the bandwidths of the chaos states found are investigated, where the bandwidths of the CP states observed at the strong injection regime are two to four times broader than the bandwidths of the CO states found at the weak injection regime. In this paper, frequency-locked states with different winding numbers, the ratio of the oscillation frequency, and the repetition frequency of the injection pulses are also studied. Both the cases for repetition frequency above and below the relaxation oscillation frequency are examined. The winding numbers of the frequency-locked states reveal a Devil's staircase structure, where a Farey tree showing the relations between the neighboring states is constructed.
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ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2008.2010558