simulation and analysis of single mode semiconductor laser
DESCRIPTION
Simulation and Analysis of Single Mode Semiconductor Laser. Course Project for EE8114 Electrical Engineering Dept. Ryerson University Grace FENG. Outline of My Work. Background Research on Fiber over Radio. Close Study on the Simulink Based Semiconductor Laser Diode Model. - PowerPoint PPT PresentationTRANSCRIPT
Simulation and Analysis of
Single Mode Semiconductor Laser
Simulation and Analysis of
Single Mode Semiconductor Laser
Course Project for EE8114
Electrical Engineering Dept.
Ryerson University
Grace FENG
Course Project for EE8114
Electrical Engineering Dept.
Ryerson University
Grace FENG
Outline of My Work
Close Study on the Simulink BasedSemiconductor Laser Diode Model
Repeat the Simulation Results from the Previous Work
Background Research on Fiber over Radio
Build Simulation Functions to Analyze the Optical Response of the LaserDiode
Large-Signal Simulink Model
S.A. Javro & S.M. Kang“Transforming Tucker’s Linearized Laser Rate Equations to a Form that has a Single Solution Regime”
Journal of Lightwave Technology, 1995
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tN
tS
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tI
dt
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)(])([)(tN
tS
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Rate Equation for Carrier Density and Photon Density
Large-Signal Simulink Model, Cont.
Toby Schaer, Robert Rusnov, Stephen Eagle, Jay Jastrebski, Steven Albanese and Xavier Fernando“A Dynamic Simulation Model for Semiconductor Laser Diodes”
CCECE 2003 – CCGEI 2003, Montreal, May/mai 2003
Operating Point
Pumping Current (mA) Electron Density (m-3) Photon Density (m-3)
10mA 1.9531 * 1018 1.9221 * 1013
15mA 1.9571* 1018 1.7141 * 1014
S
NY .10STATE SPACE MODELSTATE SPACE MODEL
Using the operating point values to complete State Space Model, so that to enable simulation around operating point.
Small-Signal Simulink Model
State Space ModelImplemented in Matlab
Current Input
Rectanglur PulseAmplitude = 1mA
Photon Output
Pumping Current(10mA, 15mA)
Pulse Response when bias point of I = 10mA Pulse Response when bias point of I = 15mA
Sinusoidal Signal Response
Sinusoidal Signal Response, Cont.
Amplitude of Input Signal Increased from 0.001mA to 1mA
Stepped by 0.001mA
Simulating System Response 100 Times
Sampling the Input Amplitude each Time
Sampling the Output Amplitude each Time
Plot the Relationship betweenInput and Output Amplitude
Analyze the Result
Sinusoidal Signal Response, Cont.
Sample Phase Shift during Each Simulation
Plot the Relationship between Input Amplitude with Output Phase Shift
Conclusion
Small Input Eletronic Signal around Operating Point of a Laser Diode could Lead to Linear Optical Response in Terms of Amplitude
Phase Shift in Optical Response around Operating Point Does Not Respond to Any Changes in Input Electronic Signal