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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 10 — May. 9, 2011
  • pp: 9461–9474

Ultrafast all-optical switching based on cross modulation utilizing intersubband transitions in InGaAs/AlAs/AlAsSb coupled quantum wells with DFB grating waveguides

Ping Ma, Yuriy Fedoryshyn, and Heinz Jäckel  »View Author Affiliations


Optics Express, Vol. 19, Issue 10, pp. 9461-9474 (2011)
http://dx.doi.org/10.1364/OE.19.009461


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Abstract

A distributed feedback Bragg grating waveguide all-optical switch design relying on the ultrafast cross modulation effect of the intersubband transitions in InGaAs/AlAs/AlAsSb coupled double quantum wells is demonstrated. The pump-induced phase modulation to the signal light is converted to intensity modulation efficiently on chip with the help of the grating structures. To our best knowledge, the switching dynamic characteristics of such design are reported for the first time. With a 400 μm long grating waveguide, 3 dB modulation depth with switching energy of 5.5 pJ and recovery time of 4.5 ps is obtained for the switch-off operation.

© 2011 OSA

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(230.1150) Optical devices : All-optical devices
(230.1480) Optical devices : Bragg reflectors
(320.7080) Ultrafast optics : Ultrafast devices
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(130.4815) Integrated optics : Optical switching devices
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: February 28, 2011
Revised Manuscript: April 23, 2011
Manuscript Accepted: April 27, 2011
Published: April 29, 2011

Citation
Ping Ma, Yuriy Fedoryshyn, and Heinz Jäckel, "Ultrafast all-optical switching based on cross modulation utilizing intersubband transitions in InGaAs/AlAs/AlAsSb coupled quantum wells with DFB grating waveguides," Opt. Express 19, 9461-9474 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-10-9461


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