paper 140320115325

In this paper, we design an elliptical core silicon nanowire embedded spiral photonic crystal fiber (SN-SPCF) using fully vectorial finite element method. Further, we analyze the various optical properties, namely, waveguide dispersion, birefringence and effective nonlinearity by varying the ellipticity for a wide range of wavelengths from 0.450 µm to 2.050 µm. The proposed structure exhibits a high birefringence of 0.74143 for a small ellipticity of 0.3 at a longer wavelength of 2.05 µm. Besides, we investigate the evolution of supercontinuum generation both in spectral and temporal domains as a function of ellipticity at 1.550 µm wavelength for an input pulse of width 100 fs and peak power of 50 W in a fiber of 2 mm length. The numerical results corroborate that the proposed SN-SPCF provides a wider bandwidth of supercontinuum (600 to 2600 nm) and the findings of this work may be useful in ultrahigh-resolution optical coherence tomography.

Citation

Abdosllam M. Abobaker, E. Gunasundari, Kaliyaperumal Nakkeeran, P. Ramesh Babu, Krishnamoorthy Senthilnathan, and S. Sivabalan, "Supercontinuum Generation in Elliptical Silicon Nanowire Embedded Spiral Photonic Crystal Fiber," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)1207-1211

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