Numerical analysis of simultaneous measurement of the refractive index and the pressure utilizing the mode splitting in a single-opening microring resonator

Zhang, Ping; Wang, Yufei; He, Dongyue; Xiao, Mi

doi:10.1016/j.optcom.2018.10.054

Cited by 8 publications

(3 citation statements)

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“…The stress-induced variation in RI of resonator material can be expressed in the following mathematical model [ 39 ]

where σ x , σ y and σ z are the stress tensor components in the x-, y- and z-axes directions, respectively. The stress-optical constants C 1 and C 2 can set as −1.705 × 10 −11 Pa −1 and 5.485 × 10 −12 Pa −1 from the literature [ 38 ].…”

Section: Sensing Performance and Analysismentioning

confidence: 99%

“…where σ x , σ y and σ z are the stress tensor components in the x-, y-and z-axes directions, respectively. The stress-optical constants C 1 and C 2 can set as −1.705 × 10 −11 Pa −1 and 5.485 × 10 −12 Pa −1 from the literature [38].…”

Section: The Pressure Response Of the Mdrmentioning

confidence: 99%

“…Analogously, it is feasible for a microdisk resonator with two WGMs to achieve dual parameter sensing of the RI and the pressure simultaneously. Moreover, we have successfully proposed a SOMRR structure for the simultaneous measurement of RI and pressure utilizing the mode splitting in our previous work [ 38 ]. However, the Q factor of the SOMRR is ~1000, much lower than state-of-the-art microcavity sensors due to the scattering loss at the opening.…”

Section: Introductionmentioning

confidence: 99%

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FDTD Simulation: Simultaneous Measurement of the Refractive Index and the Pressure Using Microdisk Resonator with Two Whispering-Gallery Modes

Zhang

et al. 2020

Sensors

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In this paper, an approach to measure both the refractive index (RI) and the pressure simultaneously using two Whispering-Gallery Modes (WGMs) in a microdisk resonator is theoretically proposed. Due to the difference in the energy distribution of the first and second order WGMs, the sensitivity of two modes toward the variation of RI and pressure applied to the device show differences. An RI sensitivity of 29.07 nm/RIU and pressure sensitivity of 0.576 pm/kPa for WGM (1,36), and an RI sensitivity of 38.68 nm/RIU and a pressure sensitivity of 0.589 pm/kPa for WGM (2,28) are obtained through the 3D finite-difference time-domain (3D-FDTD) simulation. Dual parametric sensing can be achieved by solving the second-order inverse sensitivity matrix. Therefore, strain–optical coupling behavior is effectively eliminated. The dual sensing scheme we proposed provides a novel approach to overcome the difficulty of multi-sensing applications based on the flexible photonic device.

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“…The stress-induced variation in RI of resonator material can be expressed in the following mathematical model [ 39 ]

Section: Sensing Performance and Analysismentioning

confidence: 99%

Section: The Pressure Response Of the Mdrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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