Exceptional-surface-enhanced rotation sensing with robustness in a whispering-gallery-mode microresonator

Li, Wenxiu; Zhou, Yang; Han, Peng; Chang, Xiaoyang; Jiang, Shuo; Huang, Anping; Zhang, Hao; Xiao, Zhisong

doi:10.1103/physreva.104.033505

Cited by 19 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is believed that the bigger wedged resonator and the higher quality factor promise lower detectable rotation rates. In the past decades, lots of technique methods emerge to reinforce the performance of gyroscopes such as exceptional point [10,40,51,52] and exceptional surfaces [2,53,54], parity-time symmetry [55,56] and anti-parity-time symmetry [57,58], and nonlinear enhancement [57,59,60].…”

Section: Discussionmentioning

confidence: 99%

Experimental demonstration of phase-matching and Sagnac effect in a millimeter-scale wedged resonator gyroscope

Mao,

Yang,

Long

et al. 2022

Preprint

View full text Add to dashboard Cite

The highly efficient coupling of light from conventional optical components to optical mode volumes lies in the heart of chip-based micro-devices, which is determined by the phase-matching between propagation constants of fiber taper and the whispering-gallery-mode (WGM) of the resonator. Optical gyroscopes, typically realized as fiber-optic gyroscopes and ring-laser gyroscopes, have been the mainstay in diverse applications such as positioning and inertial sensing. Here, the phase-matching is theoretically analyzed and experimentally verified. We observe Sagnac effect in a millimeter-scale wedged resonator gyroscope which has attracted considerable attention and been rapidly promoted in recent years. We demonstrate a bidirectional pump and probe scheme, which directly measures the frequency beat caused by the Sagnac effect. We establish the linear response between the detected beat frequency and the rotation velocity. The clockwise and counterclockwise rotation can also be distinguished according to the value of the frequency beat. The experimental results verify the feasibility of developing gyroscope in WGM resonator system and pave the way for future development.

show abstract

Section: Discussionmentioning

confidence: 99%

Experimental demonstration of phase-matching and Sagnac effect in a millimeter-scale wedged resonator gyroscope

Mao,

Yang,

Long

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The concept of an exceptional surface has been recently investigated in optics in several research works [ 65 , 66 , 67 , 68 , 69 ].…”

Section: Exceptional Surfacementioning

confidence: 99%

Non-Hermitian Sensing in Photonics and Electronics: A Review

Carlo

Leonardis

Soref

et al. 2022

Sensors

View full text Add to dashboard Cite

Recently, non-Hermitian Hamiltonians have gained a lot of interest, especially in optics and electronics. In particular, the existence of real eigenvalues of non-Hermitian systems has opened a wide set of possibilities, especially, but not only, for sensing applications, exploiting the physics of exceptional points. In particular, the square root dependence of the eigenvalue splitting on different design parameters, exhibited by 2 × 2 non-Hermitian Hamiltonian matrices at the exceptional point, paved the way to the integration of high-performance sensors. The square root dependence of the eigenfrequencies on the design parameters is the reason for a theoretically infinite sensitivity in the proximity of the exceptional point. Recently, higher-order exceptional points have demonstrated the possibility of achieving the nth root dependence of the eigenfrequency splitting on perturbations. However, the exceptional sensitivity to external parameters is, at the same time, the major drawback of non-Hermitian configurations, leading to the high influence of noise. In this review, the basic principles of PT-symmetric and anti-PT-symmetric Hamiltonians will be shown, both in photonics and in electronics. The influence of noise on non-Hermitian configurations will be investigated and the newest solutions to overcome these problems will be illustrated. Finally, an overview of the newest outstanding results in sensing applications of non-Hermitian photonics and electronics will be provided.

show abstract

“…Different routes to construct EPs in WGMRs systems have been reported, such as the parity-time (PT) symmetry [14][15][16] , the anti-parity-time (anti-PT) symmetry [17,18] , and the fully asymmetric mutual coupling between clockwise (CW) and counter-clockwise (CCW) modes [5,19] . Thereinto, EP can be implemented in a single WGMR by manipulating the mutual coupling of CW and CCW modes associated with coupling manipulation elements, such as two external scatterers [5,20,21] or defects [22] , end-mirror (e.g., silver layer [23] , fiber-loop mirror [24] , fiber grating [25] ), optical isolator [26] , Brewster notch [27] . Recently, the observation of EP in silicon microring with an S-shaped waveguide [2,28] or notch [29,30] has been reported.…”

Section: Introductionmentioning

confidence: 99%

Experimental observation of the exceptional point in a nanocylinder-loaded silicon microring

Wang

et al. 2023

Integrated Optics: Devices, Materials, and Technologies XXVII

View full text Add to dashboard Cite

Exceptional points (EPs) in whispering-gallery-mode microresonators systems have attracted substantial attention due to their intriguing and anomalous optical characteristics. Recently, EPs have been experimentally observed in silicon microrings with coupling manipulation elements, such as an S-shaped waveguide and notch. In this paper, the observation of EP in a nanocylinder-loaded silicon microring is experimentally demonstrated. The device consists of a 5μm microring with two nanocylinders placed close to the outer edge of the microring. By tailoring the size and position of the two nanocylinders, the fully asymmetric coupling between the clockwise-and counterclockwise-propagating modes occurs, leading to the implementation of EP. Experimentally, the spectral response is investigated by single-side excitation from clockwise and counter-clockwise directions. The reciprocal transmission and nonreciprocal reflection spectra are observed, which confirms the proposed device works in the vicinity of EP. The construction of EP in silicon microring paves the way to basic science and applied technology in non-Hermitian physics.

show abstract

Exceptional-surface-enhanced rotation sensing with robustness in a whispering-gallery-mode microresonator

Cited by 19 publications

References 42 publications

Experimental demonstration of phase-matching and Sagnac effect in a millimeter-scale wedged resonator gyroscope

Experimental demonstration of phase-matching and Sagnac effect in a millimeter-scale wedged resonator gyroscope

Non-Hermitian Sensing in Photonics and Electronics: A Review

Experimental observation of the exceptional point in a nanocylinder-loaded silicon microring

Contact Info

Product

Resources

About