Realization of ultrafast all-optical switching with switching gain in a single semiconductor waveguide

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Realization of ultrafast all-optical switching with switching gain in a single semiconductor waveguide
Title:
Realization of ultrafast all-optical switching with switching gain in a single semiconductor waveguide
Journal Title:
Optics Letters
Keywords:
Publication Date:
10 June 2014
Citation:
Yijing Chen, Vivek Krishnamurthy, Yicheng Lai, and Seng-Tiong Ho, "Realization of ultrafast all-optical switching with switching gain in a single semiconductor waveguide," Opt. Lett. 39, 3567-3570 (2014)
Abstract:
In this letter, we report for the first time that all-optical switching gain can be achieved with a dual-wavelength control vs pump beam scheme in a single semiconductor waveguide structure. That means a weak optical beam can switch a strong optical beam. Moreover, a high switching speed of 10-100Gb/s can be achieved. The all-optical switching is simulated numerically via a multi-level multi-electron (MLME) FDTD program capable of modeling complex semiconductor band properties. It is shown that a weak control/input-signal beam at a longer wavelength is able to switch the transmission of a strong pump/output-signal beam at a shorter wavelength. A 50Gbps and 0.5pJ per bit switching operation with switching gain of around 10 is shown for a 40m-long waveguide with pump beam power around 20mW based on bulk InGaAsP material and a 300nm x 300nm waveguide (the control beam power is 1/10 of that for the pump).
License type:
PublisherCopyrights
Funding Info:
Description:
© 2014 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
ISSN:
0146-9592
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