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Sb-based coupled quantum wells for efficient broadband intersubband all-optical switches

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4 Author(s)

We optimized a cTQW structure for both switching energy and response time using InGaAs/AlAs/AlAsSb material system. In such a structure, we expect switching energy to be in the range of a few 100s to a few 10s of fJ (few 10s of nW) depending on the growth optimization. We estimated the LO-phonon assisted relaxation time to be about 500 fsec (switching speeds exceeding 1THz) with multi-wavelength applicability. This low energy and high speed QW structure is ideal for realizing highly efficient gate switch for futuristic all-optical communication networks with bit rates exceeding few 100 Gb/s.

Published in:

Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002

Date of Conference:

17-22 Mar 2002