A novel coupled quantum well structure with large field-induced refractive index change and low absorption loss at 1.55 ?m
Chinese Optics Letters, Vol. 3, Issue 9, pp. 533-535 (2005)
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Abstract
A novel coupled quantum well structure --- quasi-symmetric coupled quantum well (QSCQW) is proposed. In the case of low applied electric field (F = 25 kV/cm) and low absorption loss (? ~ 100 cm^(-1)), a large field-induced refractive index change (for TE mode, ?n = 0.0106; for TM mode, ?n = 0.0115) is obtained in QSCQW structure at operating wavelength ? = 1550 nm. The value is larger by over one to two order of magnitude compared to that in a rectangular quantum well (RQW) and about 50% larger than that of five-step asymmetric coupled quantum well (FACQW) structure under the above work conditions.
© 2005 Chinese Optics Letters
OCIS Codes
(160.4760) Materials : Optical properties
(160.6000) Materials : Semiconductor materials
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
Citation
Zhixin Xu, Qiang Zhou, Xiaoqing Jiang, Xihua Li, Jianyi Yang, and Minghua Wang, "A novel coupled quantum well structure with large field-induced refractive index change and low absorption loss at 1.55 ?m," Chin. Opt. Lett. 3, 533-535 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-9-533
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