期刊
LASER PHYSICS LETTERS
卷 10, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1612-2011/10/6/065901
关键词
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资金
- Chinese National Key Basic Research Special Fund [2011CB922003]
- Natural Science Foundation of China [10974103, 11174159]
- Program for New Century Excellent Talents in University [NCET-09-0484]
We demonstrate all-optical modulation based on ultrafast saturable absorption in graphene-covered-microfiber. By covering the microfiber surface with polydimethylsiloxane supported graphene film along the fiber length, a greatly enhanced interaction between the propagating light and the graphene can be obtained via the strong evanescent field of the microfiber. The strong light-graphene interaction results in high-speed, broadband all-optical modulation with maximum modulation depths of 5 dB and 13 dB for single-layer and bi-layer graphene, respectively. Such a graphene all-optical modulator is easy to fabricate, is compatible with optical fiber systems and has high potential in photonics applications such as all-optical switching and all-optical communications.
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