Yong You, Huiyi Guo, wei Li, Yili Ke, Shaoxiang Duan, Zhi Wang, Yange Liu. Surface-Mode Resonance Coupling Effect and High-Temperature Sensing Characteristics in Hollow-Core Photonic Bandgap Fibers[J]. Acta Optica Sinica, 2021, 41(13): 1306005
- Acta Optica Sinica
- Vol. 41, Issue 13, 1306005 (2021)
Fig. 1. HC-PBF structure. (a) Electron micrograph of cross-sectional structure; (b) transmission spectrum and mode field diagrams of surface modes
Fig. 2. Simulated 7-cell HC-PBF structure. (a) Cross-section structure; (b) core surrounding structure and structural parameters
Fig. 3. Theoretical simulation results of the photonic bandgap fiber. (a) Effective refractive index dispersion curves of the fundamental mode and surface modes; (b) relationship between loss and wavelength; (c) fiber mode field at several typical wavelengths
Fig. 4. Relationship between surface scattering loss, confinement loss and temperature by theoretical calculation
Fig. 5. Sensing experimental device of HC-PBF
Fig. 6. Spectrum change of fiber under different temperatures. (a) Within 100 ℃; (b) within 300 ℃
Fig. 7. Relationship between the loss peak of the surfacemode and temperature
Fig. 8. Characteristics of strain response. (a) Change of spectra of SM2 under different strain conditions; (b) minimum transmission spectrum and the center resonance wavelength varying with strain
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