Modeling of evanescent coupling between two parallel optical nanowires
Applied Optics, Vol. 46, Issue 9, pp. 1429-1434 (2007)
http://dx.doi.org/10.1364/AO.46.001429
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Abstract
Evanescent coupling between two parallel nanowires is investigated using the finite-difference time-domain method. Silica, tellurite, and silicon nanowires are used as typical materials in the simulation. Compared with weakly coupled waveguides, strongly coupled nanowires show much smaller transfer lengths without sacrificing high coupling efficiencies, suggesting possibilities for developing highly compact evanescent-coupling-based nanowire photonic devices, as well as for achieving high-efficiency interconnection between nanowires and external optical systems. Meanwhile, the polarization-dependent coupling properties, the considerably high minimum coupling efficiency, and the supermode-cutoff-like behavior are also observed. Evanescent coupling properties of strongly coupled nanowires demonstrated may provide valuable references for practical applications of optical nanowires.
© 2007 Optical Society of America
OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(230.7370) Optical devices : Waveguides
History
Original Manuscript: October 31, 2006
Manuscript Accepted: December 2, 2006
Published: March 1, 2007
Citation
Keji Huang, Shuangyang Yang, and Limin Tong, "Modeling of evanescent coupling between two parallel optical nanowires," Appl. Opt. 46, 1429-1434 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-9-1429
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