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

Bing Xiong; Changzheng Sun; Yi Luo

doi:10.1117/12.444944

19 October 2001 Optimization of wavelength detuning of high-speed electro-absorption modulators for better transmission capability

Bing Xiong, Changzheng Sun, Yi Luo

Author Affiliations +

Proceedings Volume 4580, Optoelectronics, Materials, and Devices for Communications; (2001) https://doi.org/10.1117/12.444944
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

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.

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Bing Xiong, Changzheng Sun, and Yi Luo "Optimization of wavelength detuning of high-speed electro-absorption modulators for better transmission capability", Proc. SPIE 4580, Optoelectronics, Materials, and Devices for Communications, (19 October 2001); https://doi.org/10.1117/12.444944

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