On-chip tunable dispersion in a ring laser gyroscope for enhanced rotation sensing

Zhang, Hao; Liu, Jiaming; Lin, Jian Hung; Li, Wenxiu; Xia, Xue; Huang, Anping; Xiao, Zhisong

doi:10.1007/s00339-016-0008-9

Cited by 15 publications

(8 citation statements)

References 38 publications

(39 reference statements)

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“…Optical micro-resonators with high-Q factors and small mode volumes for sensing, which can provide significant enhancement for lightmatter interactions, have received considerable attraction over the last decade years, including temperature [1][2][3][4][5], refractive index [6,7], pressure [8], biosensing [9][10][11] and rotation sensors [12][13][14][15][16][17][18]. Traditionally, there are two measurement methods to detect perturbations for an optical whispering gallery mode (WGM) microcavity.…”

Section: Introductionmentioning

confidence: 99%

Variable optical chirality in atomic assisted microcavity*

Zhang

Han

et al. 2020

Chinese Phys. B

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The manipulating of optical waves in a microcavity is essential to developing the integrated optical devices. Generally, the two eigenmodes in a whispering-gallery-mode (WGM) microcavity possess chiral symmetry. Here we show the chiral symmetry breaking is induced by the asymmetric backscattering of counter-propagating optical waves in a whispering-gallery-mode (WGM) microcavity with a cavity-made slot filled with atomic vapor. Through tuning the dispersion relation of the atomic vapor in the cavity-made slot, the chiral modes are continuously steered. The mode frequency splitting in the transmission and reflection spectra stem from the chiral symmetry breaking of the two eigenmodes. The displacement sensitivity of the proposed system in response to the length variation of cavity-made slot exhibits a high sensitivity value of 15.22 THz/nm.

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Section: Introductionmentioning

confidence: 99%

Variable optical chirality in atomic assisted microcavity*

Zhang

Han

et al. 2020

Chinese Phys. B

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“…They are widely used as key components of inertial navigation systems in many industrial and military applications, such as airplanes, ships, satellites, and so on. Considerable research effort has been devoted to realizing chip-scale compact optical gyroscopes [4][5][6][7][8][9][10][11][12][13][14][15][16][17] because such small and navigation-grade rotation sensors have the potential to be used in mobile platforms and may extend into numerous applications. However, the sensitivity of an optical gyroscope decreases as the size of the sensing element decreases.…”

Section: Introductionmentioning

confidence: 99%

“…Thus far, many proposals for enhancing the sensitivity of SFS have been made [17,[19][20][21][22][23][24]. Most of them are based on enhancement using the effect of anomalous dispersion [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Large Sagnac frequency splitting in a ring resonator operating at an exceptional point

Sunada

2017

Phys. Rev. A

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In rotating ring resonators, resonant frequencies are split because of the Sagnac effect. The rotation sensitivity of the frequency splitting characterizes the sensitivity of resonator-based optical gyroscopes. In this paper, it is shown that the sensitivity of frequency splitting can be significantly enhanced in a ring resonator operating at an exceptional point (EP), which is a non-Hermitian degeneracy where two eigenvalues and the corresponding eigenmodes coalesce. As an example, a ring resonator with a periodic structure is proposed and theoretically and numerically studied. It is numerically demonstrated that in the resonator operating near an EP, the rotation-induced frequency splitting can be more than two orders greater than that in conventional ring resonators. In addition, this paper discusses the influence of the resonator loss on the measurement sensitivity of the frequency splitting and a method of rotation detection based on rotation-induced changes of eigenmodes near an EP.

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“…Optical microresonators with high Q factors and small mode volumes for sensing have received considerable attention in recent years for their potential applications in temperature [1][2][3][4][5][6], refractive index [7,8], pressure [9], biosensing [10][11][12], and rotation sensing [13][14][15][16][17][18]. Recent microresonator sensors have been based on the measurement of resonance frequency or resonance wavelength shifts due to the change of the environment parameters.…”

Section: Introductionmentioning

confidence: 99%

On-chip high-sensitivity temperature sensor based on gain–loss coupled microresonators

Zhang

Liu

et al. 2017

J. Opt. Soc. Am. B

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Microcavities based on asymmetrical Fano resonance have great potential in the application of ultra-sensitive sensors. In this paper, a very sharp asymmetrical Fano resonance is achieved by indirectly coupled gain-loss cavities. The sensitivity for detecting temperature can be enhanced up to 10 7 ∕K, 8 orders of magnitude greater than that for two indirectly coupled lossy cavities. The resolution of the thermal sensor reaches 10 −13 K. A thermal sensing mechanism based on coupled gain-loss optical cavities is investigated theoretically. The integrated structure shows potential to be an ultra-sensitive temperature microsensor.

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On-chip tunable dispersion in a ring laser gyroscope for enhanced rotation sensing

Cited by 15 publications

References 38 publications

Variable optical chirality in atomic assisted microcavity*

Variable optical chirality in atomic assisted microcavity*

Large Sagnac frequency splitting in a ring resonator operating at an exceptional point

On-chip high-sensitivity temperature sensor based on gain–loss coupled microresonators

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