A Novel Photonic Crystal Fiber with Two Rings of Hybrid Elliptical Air-Holes for Single-Polarization Single-Mode Operation

Abstract:

A novel photonic crystal fiber (PCF) design with two rings of hybrid elliptical air-holes for single-polarization single-mode (SPSM) operation is presented. The proposed SPSM-PCF characteristics are investigated by using a full-vector finite element method (FEM) with perfect matched layer (PML) boundary conditions. The proposed SPSM-PCF can perform a single-polarization single-mode propagation. The modal birefringence of the proposed SPSM-PCF is as high as 0.00284 at the wavelength of 1.55 µm, the beat length is 0.546 mm. The confinement loss of the x-polarized mode is lower than 0.5 dB/km, whereas the loss of the y-polarized one is larger than 15 dB/km. Compared with the case of x-polarized mode, the y-polarized mode can be suppressed with a shorter fiber length. Variations of the mode field characteristics with input wavelength are given. For considering loss ratio and loss difference, the proposed PCF can perform SPSM operation with wide bandwidth of 600 nm. It indicates that this is a good solution to realize single-mode single-polarization operation.

• Periodical: Advanced Materials Research (Volumes 301-303)
• Pages: 45-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.301-303.45
• Online since: July 2011
• Authors: Hong Jun Zheng, Chong Qing Wu, Jian Wang, Zhi Wang, Shan Liang Liu, Xin Li
• Keywords: Finite Element Model (FEM), Photonic Crystal Fiber (PCF), Single-Mode, Single-Polarization

References

[1] Daniel A. Nolan, George E. Berkey, Ming-Jun Li, Xin Chen, William A. Wood, and Luis A. Zenteno, Single-polarization fiber with a high extinction ratio, Opt. Lett. 29, 1855-1857 (2004).

DOI: 10.1364/ol.29.001855

[2] J. R. Folkenberg, M. D. Nielsen, and C. Jakobsen, Broadband single-polarization photonic crystal fiber, Opt. Lett. 30, 1446-1448 (2005).

DOI: 10.1364/ol.30.001446

[3] Ming-Yang Chen, Bing Sun, and Yong-Kang Zhang, Broadband Single-Polarization Operation in Square-Lattice Photonic Crystal Fibers, J. Lightwave Technol. 28, 1443-1446 (2010).

DOI: 10.1109/jlt.2010.2042925

[4] Dora Juan Juan Hu, Ping Shum, Chao Lu, Xia Yu, Guanghui Wang, and Guobin Ren, Holey fiber design for single-polarization single-mode guidance, Appl. Opt. 48, 4038-4043 (2009).

DOI: 10.1364/ao.48.004038

[5] Kunimasa Saitoh and Masanori Koshiba, Single-Polarization Single-Mode Photonic Crystal Fibers, IEEE Photonics Technology Letters, VOL. 15, NO. 10, OCTOBER 2003, 1384-1386.

DOI: 10.1109/lpt.2003.818215

[6] Nader A. Issa, Martijn A. van Eijkelenborg, Matthew Fellew, Felicity Cox, Geoff Henry, and Maryanne C. J. Large, Fabrication and study of microstructured optical fibers with elliptical holes, Opt. Lett. 29, 1336-1338 (2004).

DOI: 10.1364/ol.29.001336

[7] Lin An, Zheng Zheng, Zheng Li, Tao Zhou, and Jiangtao Cheng, Ultrahigh Birefringent Photonic Crystal Fiber With Ultralow Confinement Loss Using Four Airholes in the Core, J. Lightwave Technol. 27, 3175-3180 (2009).

DOI: 10.1109/jlt.2008.2009074

[8] Tzong-Jer Yang, Lin-Fang Shen, Yuan-Fong Chau, Ming-Je Sung, Daru Chen, Din Ping Tsai. High birefringence and low loss circular air-holes photonic crystal fiber using complex unit cells in cladding. Optics Communications, 281 (2008) 4334–4338.

DOI: 10.1016/j.optcom.2008.05.008

[9] Ming-Yang Chen, Rong-Jin Yu, and An-Ping Zhao, Confinement Losses and Optimization in Rectangular-Lattice Photonic-Crystal Fibers, J. Lightwave Technol. 23, 2707- (2005).

DOI: 10.1109/jlt.2005.853151