期刊
OPTICS EXPRESS
卷 20, 期 24, 页码 27322-27330出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.027322
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资金
- JSPS KAKENHI [23656243, 24360150]
- Grants-in-Aid for Scientific Research [23656243] Funding Source: KAKEN
At routing nodes in future photonic networks, pico-second switching will be a key function. We propose an all-optical switch consisting of two-stage Mach-Zehnder interferometers, whose arms contain graphene saturable absorption films. Optical amplitudes along the interferometers are controlled to perform switching between two output ports instead of phase control used in conventional switches. Since only absorption is used for realizing complete switching, insertion loss of 10.2 dB is accompanied in switching. Picosecond response can be expected because of the fast response of saturable absorption of graphene. The switching characteristics are theoretically analyzed and numerically simulated by the finite-difference beam propagation method (FD-BPM). (C) 2012 Optical Society of America
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