| Issue |
EPL
Volume 100, Number 4, November 2012
|
|
|---|---|---|
| Article Number | 44001 | |
| Number of page(s) | 5 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/100/44001 | |
| Published online | 29 November 2012 | |
Modulated reflectivity via a symmetrical metal cladding ferrofluids core waveguide chip
1 Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University Changzhou, Jiangsu, 213022, China
2 Department of Physics, State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China
3 The Institute for Quantum Science and Engineering and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
(a) hqb0092@163.com
Received: 24 August 2012
Accepted: 31 October 2012
We report results of experiments and calculations that help to clarify the underlying physics of the light matter interaction in a symmetrical metal cladding ferrofluids core waveguide chip. Without applying external magnetic field, the observed tunable reflectivity confirms the formation of regular particle aggregates in the ferrofluids under the excited ultrahigh-order modes. A tentative explanation is proposed based on the competition between the optical trapping effect and the Soret effect as the field intensity increases.
PACS: 47.65.Cb – Magnetic fluids and ferrofluids / 42.82.Et – Waveguides, couplers, and arrays
© EPLA, 2012
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