Design of a sinc-sampled fiber Bragg grating fabricated in high birefringence fiber

Qing Bai; De-jun Feng; Wei Ji

doi:10.1007/s11801-011-1009-8

Optoelectronics Letters ›› 2011, Vol. 7 ›› Issue (5) : 367-370. DOI: 10.1007/s11801-011-1009-8

Article

Design of a sinc-sampled fiber Bragg grating fabricated in high birefringence fiber

Qing Bai¹ ,
De-jun Feng¹^,²^,^b ,
Wei Ji¹^,²

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Abstract

In this paper we design a new kind of sinc-sampled fiber Bragg grating which is fabricated in high birefringence fiber (HBF). The sampled grating has two sets of reflection spectra along two perpendicular polarization directions. The grating’s channel number can be doubled approximately by designing the refractive index difference between the fast and slow axes of the fiber, which enhances the utilization ratio and reduces the claim for photosensitivity of the fiber. The group delay characteristics are theoretically studied and side-lobes are depressed by apodization as well to get the optimized spectra. The results show that the comb-like spectra of the grating have promising applications in both multi-wavelength polarized fiber lasers and fiber sensing networks.

Keywords

Reflection Spectrum / Fiber Bragg Grating / Group Delay / Utilization Ratio / Comb Filter

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Qing Bai, De-jun Feng, Wei Ji. Design of a sinc-sampled fiber Bragg grating fabricated in high birefringence fiber. Optoelectronics Letters, 2011, 7(5): 367‒370 https://doi.org/10.1007/s11801-011-1009-8

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This work has been supported by the Natural Science Funds of Shandong Province (No.Q2007G03), the Independent Innovation Fund of Shandong University (No.2010TS014), and the Open Fund of Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), Ministry of Education.