Computer Aided Design and Simulation of Free Space Optoelectronic Information Processing Systems
S.P. Levitan, T.P. Kurzweg, M.A. Rempel, D.M. Chiarulli
University of Pittsburgh
P.J. Marchand, C. Fan, F.B. McCormick
University of California, San Diego
Motivation
There is a need for design tools that are capable of modeling optoelectronic systems in order to exploit the potential of emerging optoelectronic devices. These tools will allow system designers to perform trade-offs between technological and architectural solutions to design problems using a combination of physical, functional and parametric models. We are building such a design and analysis tool for mixed technology Free Space Optoelectronic Information Processing Systems (FS-OIPS).
Define System Abstractions
[FSOIPS-table.gif]
Define Models in those Abstractions
Physical - Geometric relationship of optical components and signal paths
Functional/Behavioral - Signal values in space and time
Parametric -System performance measures
Abstractions of Optical Signals
- Quantum Optics - Quantum Electrodynamics
- Electromagnetic Optics- E/M Fields
- Wave Optics - Scalar Waves
- Gaussian Beams - Paraxial Waves
- Ray Optics - Geometrical Optics
B.E. Saleh and M.C. Teich Fundamentals of Photonics, Wiley 1991
Preliminary Results: Modulator-Receiver Simulation
InGaAs/InAlGaAs Multiple Quantum Well Modulators
C. Fan, et. al. "Digital free-space optical interconnections: a comparison of transmitter technologies", Applied Optics 34(7) pp. 3103-3115, 10 June 1995.
Three Stage Transimpedance Receivers
A.V. Krishnamoorthy et.al. IEEE Photonics Technology Letters, 7(11), Nov 1995
Ptolemy "end to end" Simulation
Modulator/Detector Single Channel Simulations
Full Image Gaussian Beam Simulation
Ptolemy
Advantages
- Graphical User Interface
- Built in Simulation
- Method for Iteration
- Support for Varied Domains
- Simulation Across Domains
- Access to Signal Processing Libraries
- Large User Community
Disadvantage
- Tied to Other Developers' Code
J.Buck, S. Ha, E.A. Lee, and D. G. Messerschmitt, "Ptolemy: A Framework for Simulating and Prototyping Heterogeneous Systems," Int. Journal of Computer Simulation, special issue on "Simulation Software Development," January, 1994.
Summary -- Future Work
- Focused on free-space interconnections
- Defined abstractions for E/O Signals
- Transformations performed by devices on signals
- Need to expand modeling efforts
- Verify results with measurements
- Parametric models - Noise, Power, etc.
- Need to integrate other tools
Copyright © 1996 Steven Levitan
