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Proceedings Paper

Theoretical analysis of InGaAsP multiple-quantum-well electroabsorption modulators with both polarization insensitivity and negative chirp
Author(s): Chun-Lei Guo; Yi Zeng; Zhi-Biao Hao; Yi Luo
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Paper Abstract

Polarization-sensitivity of electroabsorption (EA) modulators is analyzed by fractional-dimensional approach. Chirping parameter (alpha) is then calculated using Kramers- Kronig relations. It is found that polarization insensitive and negative chirp operation can be realized simultaneously for InGaAsP multiple-quantum-well EA modulators with optimized well width and amount of strain. We propose a polarization insensitive InGaAsP EA modulator with 9 nm wide 0.38% tensile-strained quantum wells. The modulation characteristics remains polarization independent up to 80 kV/cm, corresponding to an extinction ratio of over 15 dB, and the chirping parameter (alpha) is estimated to be around -0.25.

Paper Details

Date Published: 29 November 2000
PDF: 4 pages
Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); doi: 10.1117/12.408460
Show Author Affiliations
Chun-Lei Guo, Tsinghua Univ. (China)
Yi Zeng, Tsinghua Univ. (China)
Zhi-Biao Hao, Tsinghua Univ. (China)
Yi Luo, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4086:
Fourth International Conference on Thin Film Physics and Applications
Junhao Chu; Pulin Liu; Yong Chang, Editor(s)

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