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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 12 — Jun. 15, 2014
  • pp: 3567–3570

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

Yijing Chen, Vivek Krishnamurthy, Yicheng Lai, and Seng-Tiong Ho  »View Author Affiliations

Optics Letters, Vol. 39, Issue 12, pp. 3567-3570 (2014)

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In this Letter, we report for the first time to our knowledge that all-optical switching gain can be achieved with a dual-wavelength control versus 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 10100Gb/s can be achieved. The all-optical switching is simulated numerically via a multilevel multielectron (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 50 Gbps and 0.5 pJ per bit switching operation with switching gain of around 10 is shown for a 40 μm-long waveguide with pump beam power around 20 mW based on bulk InGaAsP material and a 300nm×300nm waveguide (the control beam power is 1/10 of that for the pump).

© 2014 Optical Society of America

OCIS Codes
(230.1150) Optical devices : All-optical devices
(130.4815) Integrated optics : Optical switching devices
(230.7405) Optical devices : Wavelength conversion devices

ToC Category:
Integrated Optics

Original Manuscript: April 3, 2014
Revised Manuscript: May 8, 2014
Manuscript Accepted: May 11, 2014
Published: June 10, 2014

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)

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