Journal
OPTICA
Volume 3, Issue 5, Pages 541-544Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.3.000541
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Funding
- National Basic Research Program of China [2013CB328703, 2014CB921600]
- National Natural Science Foundation of China (NSFC) [61475140, 11374065]
- Fundamental Research Funds for the Central Universities [2016FZA5003]
- U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Materials Sciences, and Engineering Division [DE-AC03-76SF00098]
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Graphene-based optical modulators have recently attracted much attention because of their characteristic ultrafast and broadband response. Their modulation depth ( MD) and overall transmittance (OT), however, are often limited by optical loss arising from interband transitions. We report here an all-optical, all-fiber optical modulator with a Mach-Zehnder interferometer structure that has significantly higher MD and OT than graphene-based loss modulators. It is based on the idea of converting optically induced phase modulation in the graphene-cladded arm of the interferometer to intensity modulation at the output of the interferometer. The device has the potential to be integrable into a photonic system in real applications. (C) 2016 Optical Society of America
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