Sensing Characteristics of Near-Infrared Band Based on New Photonic Crystal Fiber

Wen Zhang; Bingbing Bai; Yanzeng Zhang; Cong Chen; Qiyuan Shao; Cancan Chen; Haoran Wang; Hai Liu

doi:10.3788/CJL202148.0706001

Chinese Journal of Lasers, Volume. 48, Issue 7, 0706001(2021)

Sensing Characteristics of Near-Infrared Band Based on New Photonic Crystal Fiber

Wen Zhang^1,2, Bingbing Bai^1,2, Yanzeng Zhang^1,2, Cong Chen^1,2, Qiyuan Shao^1,2, Cancan Chen^1,2, Haoran Wang^1,2, and Hai Liu^1,2、*

Author Affiliations

¹Engineering Research Center of Ministry of Education for Intelligent Control of Underground Space, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China,

²School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China

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Figures & Tables(12)

Fig. 1. Cross-sectional view of PCF structure and energy distributions of fundamental mode of fiber core. (a) PCF structural diagram based on octagonal cladding structure; (b) energy distribution in X polarization direction; (c) energy distribution inY polarization direction

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Fig. 2. Relationship between confinement loss and wavelength in different polarization directions. (a) X polarization direction; (b) Y polarization direction

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Fig. 3. Influence of position change of fiber core straight waveguide on relative sensitivity. (a) X polarization direction; (b) Y polarization direction

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$Relationship between relative sensitivity and effective refractive index of fundamental mode with wavelength under different parameters. (a) Relative sensitivity in X polarization direction; (b) relative sensitivity in Y polarization direction; (c) effective refractive index in X polarization direction; (d) effective refractive index in Y polarization direction$

Fig. 4. Relationship between relative sensitivity and effective refractive index of fundamental mode with wavelength under different parameters. (a) Relative sensitivity in X polarization direction; (b) relative sensitivity in Y polarization direction; (c) effective refractive index in X polarization direction; (d) effective refractive index in Y polarization direction

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Fig. 5. Relationship among mode field aera A_eff, numerical aperture NA, and wavelength for different aperture sizes. (a) Mode field area A_eff; (b) numerical aperture NA

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Fig. 6. Principle diagram of photonic crystal fiber gas sensing

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$Relationship between confinement loss and wavelength under different optical fluid refractive indexes. (a) Confinement loss in X polarization direction; (b) confinement loss in Y polarization direction$

Fig. 7. Relationship between confinement loss and wavelength under different optical fluid refractive indexes. (a) Confinement loss in X polarization direction; (b) confinement loss in Y polarization direction

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$Relationship between relative sensitivity and wavelength under different optical fluid refractive indexes. (a) Relative sensitivity in X polarization direction; (b) relative sensitivity in Y polarization direction$

Fig. 8. Relationship between relative sensitivity and wavelength under different optical fluid refractive indexes. (a) Relative sensitivity in X polarization direction; (b) relative sensitivity in Y polarization direction

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$Relationship between effective refractive index and wavelength in different polarization directions. (a) X polarization direction; (b) Y polarization direction$

Fig. 9. Relationship between effective refractive index and wavelength in different polarization directions. (a) X polarization direction; (b) Y polarization direction

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$Mode field area Aeff and numerical aperture NA under different filling refractive indexes. (a) Aeff; (b) NA$

Fig. 10. Mode field area A_eff and numerical aperture NA under different filling refractive indexes. (a) A_eff; (b) NA

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$Relationship between dispersion and wavelength at different refractive indexes of light fluid$

Fig. 11. Relationship between dispersion and wavelength at different refractive indexes of light fluid

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Table 1. Comparison of parameters of each structure

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Table 1. Comparison of parameters of each structure

Type of structure	Frequency or wavelength	r /%	L_c/(dB·m^-1)	β /(ps·THz^-1·cm^-2)
Structure in Ref. [12]	3 THz	30.0	0.01	0.35
Structure in Ref. [14]	3 THz	60.0	0.01	0.52
Structure in Ref. [15]	1 THz	84.0	0.00295	0.63
Structure in Ref. [9]	1 THz	50.0	8.656×10^-11	0.07
Proposed structure	1.56 μm	66.9	0.00172	0.00018

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Wen Zhang, Bingbing Bai, Yanzeng Zhang, Cong Chen, Qiyuan Shao, Cancan Chen, Haoran Wang, Hai Liu. Sensing Characteristics of Near-Infrared Band Based on New Photonic Crystal Fiber[J]. Chinese Journal of Lasers, 2021, 48(7): 0706001

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Paper Information

Category: fiber optics and optical communications

Received: Aug. 20, 2020

Accepted: Oct. 14, 2020

Published Online: Mar. 29, 2021

The Author Email: Liu Hai (Lhai_hust@hotmail.com)

DOI:10.3788/CJL202148.0706001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology