期刊
OPTICS EXPRESS
卷 12, 期 26, 页码 6606-6614出版社
OPTICAL SOC AMER
DOI: 10.1364/OPEX.12.006606
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We demonstrated a novel two-dimensional photonic crystal (PC) based Symmetric Mach Zehnder type all-optical switch (PC-SMZ) with InAs quantum dots (QDs) acting as a nonlinear phase-shift source. The 600-mum-long PC-SMZ having integrated wavelength-selective PC-based directional couplers and other PC components exhibited a 15-ps-wide switching-window with 2-ps rise/fall time at a wavelength of 1.3 mum. Nonlinear optical phase shift in the 500-mum-long straight PC waveguide was also achieved at sufficiently low optical-energy (e.g., pi phase shift at similar to100-fJ control-pulse energy) due to the small saturation energy density of the QDs, which is enhanced in the PC waveguide, without using conventional measures such as SOAs with current-injected gain. The results pave the way to novel PC- and QD-based photonic integrated circuits including multiple PC-SMZs and other novel functional devices. (C) 2004 Optical Society of America.
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