2015
DOI: 10.1103/physrevapplied.3.044015
|View full text |Cite
|
Sign up to set email alerts
|

Refractometry with Ultralow Detection Limit Using Anisotropic Whispering-Gallery-Mode Resonators

Abstract: The intrinsic sensitivity of whispering-gallery-mode resonators aimed at measuring refractive index can be extremely high, although their practical performance is compromised by temperature fluctuations that masquerade as refractive-index changes. We present a triple-mode approach that delivers simultaneous and independent sensing of temperature and refractive-index changes in the same resonator. The frequency difference between two orthogonally polarized modes is used to sense temperature which is then active… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2

Citation Types

0
11
0

Year Published

2016
2016
2020
2020

Publication Types

Select...
7

Relationship

0
7

Authors

Journals

citations
Cited by 14 publications
(11 citation statements)
references
References 26 publications
0
11
0
Order By: Relevance
“…Optical microcavities featuring high-Q factors and small mode volumes, such as Fabry-Perot cavities [3], photonic crystals [4,5], microspheres [6][7][8][9], microrings [10][11][12][13][14], microtoroids [15][16][17], microbubbles [18][19][20], and microtubes [21,22] have been widely investigated in sensing applications. In general, the microcavity sensing depends mainly on reactive (i.e., dispersive) interactions, resulting in a resonance wavelength shift [23][24][25][26] or mode splitting [26,27], which essentially responds to the real part of the polarizability of the targets. Via reactive sensing, a single virus [28,29] and a single nanoparticle [30][31][32][33] have been detected experimentally.…”
Section: Introductionmentioning
confidence: 99%
“…Optical microcavities featuring high-Q factors and small mode volumes, such as Fabry-Perot cavities [3], photonic crystals [4,5], microspheres [6][7][8][9], microrings [10][11][12][13][14], microtoroids [15][16][17], microbubbles [18][19][20], and microtubes [21,22] have been widely investigated in sensing applications. In general, the microcavity sensing depends mainly on reactive (i.e., dispersive) interactions, resulting in a resonance wavelength shift [23][24][25][26] or mode splitting [26,27], which essentially responds to the real part of the polarizability of the targets. Via reactive sensing, a single virus [28,29] and a single nanoparticle [30][31][32][33] have been detected experimentally.…”
Section: Introductionmentioning
confidence: 99%
“…Over the past few years, optical whispering-gallerymode (WGM) microresonators including microspheres [1][2][3], microrings [4][5][6][7][8], microtoroids [9][10][11][12], microbubbles [13][14][15], and microtubes [16,17] have become valuable tools in sensing applications due to the significantly enhanced light-matter interaction provided by their ultrahigh-Q factors and small mode volumes [18,19]. So far, by monitoring either the cavity-resonant wavelength shift (mode shift) [20][21][22][23][24][25][26] or mode splitting [27][28][29][30], single nanoparticle binding events have been resolved. The former sensing scheme has a large detection range in particle size, while the latter is immune to various noises such as environmental temperature drift.…”
Section: Introductionmentioning
confidence: 99%
“…The reported responsivities reaching up to 200 pm per °C indicate a higher resolution than other implementations, such as localized surface plasmon resonators, surface plasmon polariton resonators, Bragg gratings, or Tamm structures . Yet, although record resolutions down to the 10 −9 °C range have been obtained with microresonators, the reported responsivities imply that achieving even a 10 −3 °C resolution requires a picometer precision in the determination of the resonance wavelength. Reaching such precision requires specific devices, such as highly monochromatic lasers as light source or bulky optoelectronic devices for signal processing.…”
mentioning
confidence: 95%
“…In this context, monitoring the optical response of temperature‐sensitive integrated photonic elements, such as microresonators or microinterferometers has arisen as an appealing solution. With such elements, temperature monitoring requires tracking the wavelength variation of narrow, high‐quality‐factor resonances (spectral width at the picometer scale).…”
mentioning
confidence: 99%
See 1 more Smart Citation