Study on transmission characteristics of photonic crystal fiber gratings with periodic air hole deformation

Yan-yan Liu; Che Tian; Yue-feng Qi; Wen-guang Guo

doi:10.1007/s11801-011-0156-2

Optoelectronics Letters ›› 2012, Vol. 7 ›› Issue (6) : 443-446. DOI: 10.1007/s11801-011-0156-2

Article

Study on transmission characteristics of photonic crystal fiber gratings with periodic air hole deformation

Yan-yan Liu¹^,²^,^a ,
Che Tian¹ ,
Yue-feng Qi¹^,² ,
Wen-guang Guo¹

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Abstract

The paper studies a kind of improved photonic crystal fiber gratings fabricated by CO₂ laser heating method. The effective refractive index of cladding induced by periodic air hole deformation is computed using multipole method, and the relationship between the effective refractive index and the collapse of air-holes is discussed, thereby the modulation expression of effective refractive index is obtained. The grating transmission characteristics are simulated. The results indicate that with the diameter of air-holes increasing from 3.3 μm to 3.7 μm, the resonance wavelength shows blue-shift, the resonance peak intensifies, and the bandwidth becomes narrow. As the collapse degree of cladding enhances, the resonance wavelength shows red-shift, the transmission increases, and the bandwidth tends to narrow.

Keywords

Photonic Crystal Fiber / Effective Refractive Index / Resonance Wavelength / Couple Mode Theory / Fourier Series Expansion

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Yan-yan Liu, Che Tian, Yue-feng Qi, Wen-guang Guo. Study on transmission characteristics of photonic crystal fiber gratings with periodic air hole deformation. Optoelectronics Letters, 2012, 7(6): 443‒446 https://doi.org/10.1007/s11801-011-0156-2

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This work has been supported by the National Basic Research Pragram of China (973 Pragram) (No.2010CB327801), the Natural Science Foundation of Hebei Province (No.F2010001286), and the Applied Basic Research Programs of Hebei Province (No.10963526D).