High Sensitivity Magnetic Field and Temperature Sensor of Photonic Crystal Fiber Based on Directional Coupling

Weihua, 施伟华 Shi; Chengjie, 尤承杰 You

doi:10.3788/aos201636.0706004

Cited by 1 publication

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“…When the light wave incident from the light-dense medium to the light-sparsely medium and has total reflection, part of the light is transmitted into the light-sparsely medium in the form of evanescent wave with the increase of the incident depth. Its strength decays exponentially [18] . When the phase matching condition is satisfied, SPR occurs and the maximum resonance loss exists at this point as shown in Figure 2(b).…”

Section: Spr Principlementioning

confidence: 99%

Dual-parameter sensor for refractive index and temperature sensing based on surface plasmon resonance

Ye,

Xue,

Zhang

et al. 2023

Plasmonics VII

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In this paper, alcohol solution is added into the center hole of PCF-SPR sensor to realize the dual parameter sensor of temperature and refractive index (RI) simultaneously. Firstly, the external temperature is fixed at 20 ℃, and the RI of the alcohol solution is changed. The resonance wavelength sensitivity is -6015.4 nm/RIU and the linearity is 0.99985 when the RI of alcohol solution is from 1.34 to 1.3654 with a resonance-loss sensitivity of -2640 dB/RIU and a linearity of 0.99475, respectively. When the concentration of alcohol solution is fixed at 70.4 % and the external temperature of PCF is changed, the resonance loss sensitivity is 1.0375 dB/℃ and the linearity is 0.976 when the external temperature is changed between 20 ℃ and 80 ℃, its resonance loss sensitivity is 2.4219 nm/℃ and the linearity is 0.9997. Finally, the sensor matrix of temperature and refractive index with respect to the shift of resonant wavelength and the change of resonant loss is obtained.

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Section: Spr Principlementioning

confidence: 99%