Optical fibre nanowire devices
Xu, Fei (2008) Optical fibre nanowire devices. University of Southampton, Optoelectronic Research Centre, Doctoral Thesis , 177pp.
The Optical Fibre Nanowire (OFN) is a potential building block in future micro- and nano-photonic device since it offers a number of unique optical and mechanical properties. In this thesis, the background and fundamental features of nanowires are introduced; the theory, design and demonstration of novel nanowire devices are discussed.
At first, a short adiabatic taper tip is manufactured, and it is used as optical tweezers for trapping 1μm microspheres.
Then, the most important devices - the OFN resonators including the simple Optical Nanowire Loop Resonator (ONLR) and complicated 3D Optical Nanowire Microcoil Resonator (OMNR) - are investigated theoretically and experimentally. A one-turn loop resonator and two-, three-, and four-turn ONMR are demonstrated experimentally; several kinds of methods on optimizing the ONMR profile are presented to make the manufacture of high-Q ONMRs easier. In order to protect and stabilize the ONMR, embedding the device in Teflon is demonstrated.
Finally, more applications in refractometric sensing are presented: schemes of sensors based on an embedded ONLR and ONMR are presented. The sensor sensitivities are calculated: 700 nm/RIU (RIU is the Refractive Index Unit) can be achieved at the wavelength of 970 nm for a diameter of 600 nm. Additionally, a refractometric sensor based on an embedded ONMR is demonstrated experimentally; its sensitivity is about 40 nm/RIU.
|Item Type:||Thesis (Doctoral)|
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
|Date Deposited:||27 Feb 2009|
|Last Modified:||12 Apr 2013 01:15|
|Contributors:||Xu, Fei (Author)
Brambilla, Gilberto (Thesis advisor)
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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