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Proceedings Paper

Optimization of wavelength detuning of high-speed electro-absorption modulators for better transmission capability
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Paper Abstract

The optimization of wavelength detuning for better transmission capability in an identical expitaxial layer (IEL) integrated light source is presented. The absorption spectra of the multiple-quantum-well (MQW) material under varying electric fields are worked out by using the fractional dimensional method. The extinction ratio and the chirping parameter of a 200um-long modulator section are calculated accordingly for different working wavelengths. A voltage-related chirping parameter has been used in a 10Gb/s-transmission simulation to make a more realistic description of the performances of the EA modulator in actual fiber communication systems. A detuning value of about 30~50nm is found to be the optimum in the sense of low power penalty and high sensitivity according to the simulation results.

Paper Details

Date Published: 19 October 2001
PDF: 5 pages
Proc. SPIE 4580, Optoelectronics, Materials, and Devices for Communications, (19 October 2001); doi: 10.1117/12.444944
Show Author Affiliations
Bing Xiong, Tsinghua Univ. (China)
Changzheng Sun, Tsinghua Univ. (China)
Yi Luo, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4580:
Optoelectronics, Materials, and Devices for Communications
Tien Pei Lee; Qiming Wang, Editor(s)

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