TITLE

Low-power, multiport, ultrafast, parametric switching in cascaded waveguide couplers

AUTHOR(S)
Schiek, Roland; Iwanow, Robert; Stegeman, George; Pertsch, Thomas; Lederer, Falk; Yoo Hong Min; Sohler, Wolfgang
PUB. DATE
July 2005
SOURCE
Applied Physics Letters;7/4/2005, Vol. 87 Issue 1, p011109
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We explore an approach to multiport, phase-insensitive all-optical switching of milliwatt power signals based on linear coupling in cascaded directional couplers and on nonlinear parametric gain via the second-order nonlinearity. For the basic unit, a two-core coupler, we experimentally demonstrated ultrafast transparent switching of 1550 nm signals triggered by 5-ps-long control pulses at ≈775 nm with a peak power of 1.3 W. Theoretically, we show that this concept has the potential for terabit/s switching with a few picojoules control energy and without pulse degradation.
ACCESSION #
18008397

 

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