Distributed effects model for cascaded traveling-wave electroabsorption modulator

A distributed model based on the large-signal electrooptic conversion is proposed to analyze cascaded traveling-wave electroabsorption modulators (TWEAMs) for high-speed optical switching applications. The microwave propagation loss, velocity mismatch, as well as frequency chirping are included. The...

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Bibliographic Details
Published in:IEEE photonics technology letters 2001-08, Vol.13 (8), p.791-793
Main Authors: Yi-Jen Chiu, Kaman, V., Zhang, S.Z., Bowers, J.E.
Format: Article
Language:English
Subjects:
Chirp modulation
Conversion
Devices
Electroabsorption modulators
Electrooptic modulators
Extinction ratio
Frequency
High speed
High speed optical techniques
Mathematical models
Microwave devices
Microwaves
Optical design
Optical modulation
Optical switching
Predictive models
Propagation losses
Tolerances
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Summary:A distributed model based on the large-signal electrooptic conversion is proposed to analyze cascaded traveling-wave electroabsorption modulators (TWEAMs) for high-speed optical switching applications. The microwave propagation loss, velocity mismatch, as well as frequency chirping are included. The model predicts that a cascaded TWEAM structure has the advantage of a high design tolerance to various distributed effects and an improved extinction ratio and optical loss in comparison to a single device of same total length. The agreement between experimental and calculated results indicates that the cascaded structures can be implemented for efficient TWEAM design.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.935805