| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Transverse Multimode Evolution in Non-Adiabatic Optical Micro/Nanofiber Tapers |
| FU Jian1, XU Ying-Ying1, TANG Shao-Fang2, LI Yang1, SUN Shuo1 |
| 1State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 3100272Qianjiang College, Hangzhou Normal University, Hangzhou 310012 |
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| Cite this article: |
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FU Jian, XU Ying-Ying, TANG Shao-Fang et al 2010 Chin. Phys. Lett. 27 014202 |
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Abstract The multimode evolution, optical losses and wavelength response of non-adiabatic micro/nano-fiber (MNF) tapers are numerically simulated using a three-dimensional finite-difference beam propagation method. For a non-adiabatic MNF taper, it is illustrated that optical losses vary with the transition region length and the optical wavelength. We explain how the complicated multimode evolutions result in the complicated optical loss and wavelength response properties, especially when the waist diameters are large enough to allow much higher-order modes. These results may offer valuable references for trapping and guiding cold atoms in atom optics and practical application of micro/nano-devices.
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| Keywords:
42.81.Qb
42.81.Dp
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Received: 19 August 2009
Published: 30 December 2009
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| PACS: |
42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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42.81.Dp
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(Propagation, scattering, and losses; solitons)
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