Reconfigurable light-driven opto-acoustic isolators in photonic crystal fibre

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Dynamic optical isolation with all-optical switching capability is in great demand in advanced optical communications and all-optical signal processing systems. Most conventional optical isolators rely on Faraday rotation and are realized using micro/nanofabrication techniques, but it is not always straightforward to incorporate magneto-optical crystals into these compact systems. Here, we report the experimental demonstration of a reconfigurable all-optical isolator based on optical excitation of a gigahertz guided acoustic mode in a micrometre-sized photonic crystal fibre core. This device has remarkable advantages over its passive counterparts, including a large dynamic range of isolation, fast switching capability and reversibility, which provide new functionality that is useful in various types of all-optical systems. Devices based on similar physical principles could also be realized in CMOS-compatible silicon on-chip platforms.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2011-09
Language
English
Article Type
Article
Citation

NATURE PHOTONICS, v.5, no.9, pp.549 - 553

ISSN
1749-4885
DOI
10.1038/NPHOTON.2011.180
URI
http://hdl.handle.net/10203/219700
Appears in Collection
PH-Journal Papers(저널논문)
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