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A single-polarization optical fiber of hollow pit type with zero total dispersion at wavelength of 1.55 μm

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4 Author(s)
Hinata, T. ; Coll. of Sci. & Technol., Nihon Univ., Tokyo, Japan ; Furukawa, S. ; Namatame, N. ; Nakajima, S.

This paper gives a design method for the single-polarization optical fiber which satisfies simultaneously the wide single-polarization bandwidth, the large modal birefringence, and the zero total dispersion at the wavelength of 1.55 μm. As a type of single-polarization fiber, the optical fiber with two hollow circular pits across the core-clad interface is proposed and designed. The normalized power (=Δ the power in the core/the total power) in the core is also evaluated for the designed fibers. It was found from the numerical analysis that when the zero total dispersion is satisfied at the wavelength of 1.55 μm, the maximum modal birefringence of 1.133×10-3 and the maximum single-polarization bandwidth of 100.6 nm are attained for the relative index difference of 1.6%. Then the normalized power in the core is 0.859

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Lightwave Technology, Journal of  (Volume:12 ,  Issue: 11 )