Journal
OPTICAL ENGINEERING
Volume 55, Issue 6, Pages -Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.OE.55.6.067104
Keywords
all-optical switching; analog to electromagnetically induced transparency; Mach-Zehnder interferometer; phase-shift multiplication effect; photonic crystal microcavities
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Funding
- National Natural Science Foundation of China [61376055, 61006045, 61370223]
- National Basic Research Program of China [2010CB923204]
- Research Foundation of Education Bureau of Hubei Province, China [T201617]
- Hubei Provincial Department of Education [D20152702]
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We theoretically and numerically investigate all-optical Mach-Zehnder interferometer switching based on the phase-shift multiplication effect of an all-optical analog on the electromagnetically induced transparency effect. The free-carrier plasma dispersion effect modulation method is applied to improve the tuning rate with a response time of picoseconds. All observed schemes are analyzed rigorously through finite-difference time-domain simulations and coupled-mode formalism. Compared with no phase-shift multiplication effect, the average pump power of all-optical switching required to yield the pi-phase shift difference decreases by 55.1%, and the size of the modulation region is reduced by 50.1% when the average pump power reaches 60.8 mW. This work provides a new direction for low-power consumption and miniaturization of microstructure integration light-controlled switching devices in optical communication and quantum information processing. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
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