Author:
Dang Van Trong,Le Tran Bao Tran,Chu Van Lanh,Nguyen Thi Hong Phuong,Trang Nguyen Minh Hang,Hoang Trong Duc,Nguyen Thi Thuy
Abstract
We demonstrate in this study that near-zero, ultra-flattened chromatic dispersion can be achieved over a wide range of wavelengths in photonic crystal fibers (PCFs) by means of slight variations in the geometrical parameters of the cladding. To do that, a new solid-core circular PCF design with various air hole diameters and lattice constants is presented, and the design features are numerically analyzed in detail. After 40 simulations, we determined three structures that possess optimal dispersion with the following lattice constants (Ʌ) and filling factors for the first ring (d1/Ʌ): Ʌ = 0.8 µm, d1/Ʌ = 0.45 for #F1, Ʌ = 0.9 µm, d1/Ʌ = 0.45 for #F2, and Ʌ = 1.0 µm, d1/Ʌ = 0.45 for #F3. High nonlinearity and low attenuation are outstanding features of our model. With these advantages, the proposed fibers are targeted for smooth flat broadband supercontinuum generation for near-infrared applications.
Reference36 articles.
1. Agrawal, G. (2013). Nonlinear fiber optics (5th ed.). Elsevier. https://doi.org/10.1016/C2011-0-00045-5
2. Ahmad, R., Komanec, M., & Zvanovec, S. (2016). Circular lattice photonic crystal fiber for mid-IR supercontinuum generation. IEEE Photonics Technology Letters, 28(23), 2736-2739. https://doi.org/10.1109/lpt.2016.2615657
3. Ahmad, R., Komanec, M., & Zvanovec, S. (2020). Ultra-wideband mid-infrared supercontinuum generation in liquid-filled circular photonic crystal fiber. Journal of Nanophotonics, 14(2), 026016. https://doi.org/10.1117/1.JNP.14.026016
4. Amir, A., Revathi, S., Inbathini, S. R., & Chandran, A. (2013). Modeling of circular photonic crystal fiber structure for high non-linearity. International Journal of Advanced Electrical and Electronics Engineering, 2(3), 88-92.
5. Birks, T. A., Knight, J. C., & Russell, P. St. J. (1997). Endlessly single-mode photonic crystal fiber. Optics Letters, 22(13), 961-963. https://doi.org/10.1364/OL.22.000961