Quasiperiodic Route to Chaos in Self-Pulsing Semiconductor Lasers Under Large Signal Current Modulation

1986 ◽  
pp. 290-292
Author(s):  
Y. C. Chen ◽  
H. G. Winful ◽  
J. M. Liu
Keyword(s):  
Semiconductor Lasers ◽  
Large Signal ◽  
Current Modulation ◽  
Quasiperiodic Route To Chaos ◽  
Route To Chaos

Routes to Chaos in Neural Networks with Random Weights

1998 ◽  
Vol 08 (07) ◽  
pp. 1463-1478 ◽  
Author(s):  
D. J. Albers ◽  
J. C. Sprott ◽  
W. D. Dechert
Keyword(s):  
Dynamical System ◽  
Neural Networks ◽  
Function Space ◽  
Dynamic Properties ◽  
Monte Carlo Study ◽  
Random Dynamical System ◽  
Network Function ◽  
The Neural Network ◽  
Quasiperiodic Route To Chaos ◽  
Route To Chaos

Neural networks are dense in the space of dynamical system. We present a Monte Carlo study of the dynamic properties along the route to chaos over random dynamical system function space by randomly sampling the neural network function space. Our results show that as the dimension of the system (the number of dynamical variables) is increased, the probability of chaos approaches unity. We present theoretical and numerical results which show that as the dimension is increased, the quasiperiodic route to chaos is the dominant route. We also qualitatively analyze the dynamics along the route.

Perturbative analysis of quasiperiodic route to chaos in the circle map

1990 ◽  
Vol 42 (1) ◽  
pp. 19-21 ◽  
Author(s):  
K M Valsamma ◽  
G Ambika ◽  
K Babu Joseph
Keyword(s):  
Circle Map ◽  
Quasiperiodic Route To Chaos ◽  
Route To Chaos

Microwave-assisted high-speed modulation of semiconductor lasers

1992 ◽  
Vol 70 (10-11) ◽  
pp. 1057-1063 ◽  
Author(s):  
Chung Y. Wu ◽  
Chang Z. Guo ◽  
J. M. Xu
Keyword(s):  
Semiconductor Lasers ◽  
High Speed ◽  
Optical Gain ◽  
Large Signal ◽  
Microwave Assisted ◽  
Active Layers ◽  
Gain Variation ◽  
Speed Modulation ◽  
Signal Simulation ◽  
High Speed Modulation

The electron temperature in the active layers of a semiconductor laser can be raised higher than that of the lattice by an externally applied microwave field. This results in a reduction in the optical gain and forms the basis of laser modulation by microwave heating. The gain variation under electron gas heating is calculated. A complete small signal analysis of current modulation, electron heating modulation, and combined or microwave-assisted modulation of semiconductor lasers is presented. In addition, the sensitivities of the electron and photon responses among the three modulation schemes are compared. Some large signal simulation results of high-speed digital modulation are also included.

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