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Proceedings Paper

Linearized multiple-quantum-well electro-absorption modulator by quantum well intermixing technique
Author(s): Won Jun Choi; Woon Sik Kim; Il Ki Han; Yong Ju Park; Eun Kyu Kim; Jung Il Lee; Jong Chang Yi
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Paper Abstract

In this paper, we propose a new technique to suppress the non- linearity of multiple quantum well (MQW) electro-absorption (EA) modulator, mainly due to an exponential-like transmission characteristics of EA modulator and non-linearity of quantum confined stark effect (QCSE), by intermixing MQW absorption region. Optical properties and its dependence on applied bias voltages of intermixed InGaAs/InGaAsP MQW absorption region, such as transition energy and gain (or absorption) spectrum have been calculated by solving Luttinger-Kohn Hamiltonian. It has been shown that the transfer function of a MQW-EA modulator can be tailored by introducing differently intermixed regions along the waveguide direction. It has been also shown that proposed technique can suppress IMD2 (2nd order intermodulation distortion) by 39.6 dB and enhance spurious free dynamic range (SFDR) by a 3.6 dB by choosing proper combination of interdiffusion lengths and waveguide lengths.

Paper Details

Date Published: 16 October 2001
PDF: 11 pages
Proc. SPIE 4602, Semiconductor Optoelectronic Device Manufacturing and Applications, (16 October 2001); doi: 10.1117/12.445708
Show Author Affiliations
Won Jun Choi, Korea Institute of Science and Technology (South Korea)
Woon Sik Kim, Hong-Ik Univ. (South Korea)
Il Ki Han, Korea Institute of Science and Technology (South Korea)
Yong Ju Park, Korea Institute of Science and Technology (South Korea)
Eun Kyu Kim, Korea Institute of Science and Technology (South Korea)
Jung Il Lee, Korea Institute of Science and Technology (South Korea)
Jong Chang Yi, Hong-Ik Univ. (South Korea)


Published in SPIE Proceedings Vol. 4602:
Semiconductor Optoelectronic Device Manufacturing and Applications

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