Demonstration of novel high-Q fibre WGM &amp;#x201C;Bottle&amp;#x201D; microresonators

Zervas, M.N.; Murugan, Ganapathy Senthil; Wilkinson, James S.

doi:10.1109/icton.2008.4598732

“…The Q and transmission loss variation when the tapered fiber is within the bottle resonator shows a strong exponential dependence. In earlier work on bottle resonators with a near-spherical shape, realized using the same technique [18], Qfactors above 10 7 were achieved, showing that the Q-factor here is not limited by scattering or by material absorption but predominantly by leakage into the fibre stems. The design of the optimum bottle resonator profiles which control the extent of this leakage is the subject of further investigation.…”

Section: Experimental Characterizationmentioning

confidence: 57%

“…We have fabricated fiber WGM bottle microresonators from short sections of optical fiber by an alternative simple and versatile "soften-and-compress" technique using a standard fusion splicer to soften the fiber locally [18]. This technique produces robust bottle microresonators in a simple, rapid, single-step process.…”

Section: Introductionmentioning

confidence: 99%

Selective excitation of whispering gallery modes in a novel bottle microresonator

Murugan¹,

Wilkinson²,

Zervas³

2009

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Selective excitation of spheroidal whispering gallery modes and bottle modes in a robust bottle microresonator fabricated straightforwardly from a short section of optical fiber is demonstrated. Characteristic resonance spectra of long-cavity bottle modes were obtained by using a tapered fiber to excite evanescently bottle microresonator at different points along its axis. Compared to bare-fiber cylindrical resonators, the bottle microresonator results in a 35x increase of the observed Q factor.

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“…In this paper, we extend our previously published "soften-and-compress" fabrication technique of solid microbottle resonators [9][10][11] to produce highly-controllable, high performance HMBRs [20]. The HMBRs were fabricated from a glass capillary using a standard fusion splicer.…”

Section: Resultsmentioning

confidence: 95%

Hollow-Bottle Optical Microresonators

Zervas

¹

,

Murugan

²

,

Petrovich

³

et al. 2011

CLEO:2011 - Laser Applications to Photonic Applications

0

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Selective excitation of whispering-gallery and bottle modes in a robust hollow-bottle optical microresonator, fabricated from a silica microcapillary by a pressure-compensated, "soften-and-compress" method, is demonstrated. Characteristic resonance spectra of bottle modes were obtained by using a tapered fiber coupled at different locations along the hollow bottle. The spectral characteristics (Q-factor, excitation efficiency) are shown to have high tolerance to angular misalignment of the tapered fiber. In addition, introduction of localized losses on the outer surface of the resonator results in selective clean-up of the transmission spectrum and superior performance. A theoretical analysis of modal turning points and associated resonant wavelengths is used to explain the mechanism of modesuppression and the resultant spectral cleaning.

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“…Recently, there has been increased activity on a new cylindrical microresonator type, namely the bottle microresonator, which, in contrast with the examples above, shows truly 3-D WGM confinement [8][9][10][11][12][13]. Bottle microresonators are solid, strong prolate spheroid structures, which support highly non-degenerate WGMs.…”

Section: Introductionmentioning

confidence: 99%

Hollow-bottle optical microresonators

Murugan¹,

Petrovich²,

Jung³

et al. 2011

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Selective excitation of whispering-gallery and bottle modes in a robust hollow-bottle optical microresonator, fabricated from a silica microcapillary by a pressure-compensated, "soften-and-compress" method, is demonstrated. Characteristic resonance spectra of bottle modes were obtained by using a tapered fiber coupled at different locations along the hollow bottle. The spectral characteristics (Q-factor, excitation efficiency) are shown to have high tolerance to angular misalignment of the tapered fiber. In addition, introduction of localized losses on the outer surface of the resonator results in selective clean-up of the transmission spectrum and superior performance. A theoretical analysis of modal turning points and associated resonant wavelengths is used to explain the mechanism of mode-suppression and the resultant spectral cleaning.

show abstract

Demonstration of novel high-Q fibre WGM “Bottle” microresonators

Cited by 8 publications

References 13 publications

Selective excitation of whispering gallery modes in a novel bottle microresonator

Selective excitation of whispering gallery modes in a novel bottle microresonator

Hollow-Bottle Optical Microresonators

Hollow-bottle optical microresonators

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