Theoretical study on ultrafast 12 all-optical switches with GaN/AlN intersubband optical amplifiers
JOSA B, Vol. 21, Issue 11, pp. 2017-2024 (2004)
http://dx.doi.org/10.1364/JOSAB.21.002017
Acrobat PDF (209 KB)
Abstract
A novel Mach–Zehnder interferometer all-optical 1×2 switch with cross-phase modulation in optically pumped GaN/AlN intersubband optical amplifiers (ISOAs) has been proposed, and the feasibility has been theoretically investigated by a one-dimensional finite-difference time-domain model. The intensity modulation due to gain saturation, which degrades the extinction ratio, is canceled by saturation of excited-state absorption in the ISOA or saturable absorption in the integrated absorption region. Pattern effect-free 1×2 and 2×2 switching operation at 640 Gbits/s has been predicted. The extinction ratio has been calculated to be greater than 16 dB at a control pulse energy of 1 pJ.
© 2004 Optical Society of America
OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(230.1150) Optical devices : All-optical devices
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(250.5980) Optoelectronics : Semiconductor optical amplifiers
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
Citation
Nobuo Suzuki, "Theoretical study on ultrafast 12 all-optical switches with GaN/AlN intersubband optical amplifiers," J. Opt. Soc. Am. B 21, 2017-2024 (2004)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-21-11-2017
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