Analysis of coupling characteristics of square five-core photonic crystal fibers

QIAN Yan; LIU Min; YANG Jing; MA Yunhua

doi:10.7510/jgjs.issn.1001-3806.2014.04.005

To study the influence of the structure parameters of a square five-core photonic crystal fiber (PCF) on coupling characteristics, according to the characteristics of its five super-modes, a method to calculate the coupling length of the PCF was given. The effect of the wavelength and the structure parameters on the coupling characteristics of the PCF was numerically studied in detail with the finite element method. The results show that the coupling length increases with the increase of the core-to-core distance, air-filling ratio, core refractive index and core diameter. However, the coupling length decreases with the increase of the wavelength. The results will provide the theoretical foundations for the design of directional couplers based on five-core PCFs.

Analysis of coupling characteristics of square five-core photonic crystal fibers

Corresponding author: LIU Min, liumin@cqu.edu.cn;

1. College of Communication Engineering, Chongqing University, Chongqing 400044, China

Received Date: 2013-09-05

Accepted Date: 2013-10-11

Available Online: 2014-07-25

Abstract: To study the influence of the structure parameters of a square five-core photonic crystal fiber (PCF) on coupling characteristics, according to the characteristics of its five super-modes, a method to calculate the coupling length of the PCF was given. The effect of the wavelength and the structure parameters on the coupling characteristics of the PCF was numerically studied in detail with the finite element method. The results show that the coupling length increases with the increase of the core-to-core distance, air-filling ratio, core refractive index and core diameter. However, the coupling length decreases with the increase of the wavelength. The results will provide the theoretical foundations for the design of directional couplers based on five-core PCFs.

HTML

Reference (17)

[1]	SAITOH K, KOSHIBA M. Numerical modeling of photonic crystal fibers[J]. Journal of Lightwave Technology, 2005, 23(11): 3580-3590.
[2]	JAN D, LIU M, HE D, et al. Research of photonic crystal fiber with high nonlinear flattened dispersion property[J]. Laser Technology,2013, 37(2):187-190(in Chinese).
[3]	LIAO Zh Y, LIU M, QIAN Y, et al. Octagonal dispersion compensation fiber[J]. Laser Technology,2013, 37(4):506-510(in Chinese).
[4]	LING F, GAN X S,GU M. Nonlinear optical microscope based on double-clad photonic crystal fibers[J]. Optics Express, 2005, 13(14):5528-5534.
[5]	LIMPERT J, SCHREIBER T, NOLTE S, et al. High-power air-clad large-mode-area photonic crystal fiber laser[J]. Optics Express, 2003, 11(7): 818-823.
[6]	BERGH R A, KOTLER G, SHAW H J. Single-mode fibre optic directional coupler[J]. Electronics Letters, 1980, 16(7): 260-261.
[7]	YANG S. Directional pattern of a cross vector sensor array [J]. The Journal of the Acoustical Society of America, 2012, 131(4): 3484-3489.
[8]	WADSWORTH W, PERCIVAL R, BOUWMANS G, et al. High power air-clad photonic crystal fibre laser[J]. Optics Express, 2003, 11(1): 48-53.
[9]	LIU M, CHIANG K S. Propagationof ultrashortpulsesin a nonlinear two-core photonic crystal fiber[J]. Applied Physics, 2010, B98(4): 815-820.
[10]	LIU M, CHIANG K S. Two-core photonic crystal fiber with zero intermodal dispersion[J]. Optics Communications, 2012,293(15):49-53.
[11]	LI D, LIU M, JIAN D, et al.Study on characteristics of highly birefringent dual-core photonic crystal fibers [J].Chinese Journal of Lasers, 2012,39(4):106-110(in Chinese).
[12]	LIU M, CHIANG K S. Nonlinear switching of ultrashort pulses in multicore fibers[J]. Quantum Electronics, 2011, 47(12): 1499-1505(in Chinese).
[13]	YI Ch Sh, ZHANG P Q,DAI Sh X, et al. Research progress of large-mode area photonic crystal fibers[J].Laser Optoelectronics Progress,2012(10):1-11(in Chinese).
[14]	CHEO P K, KING G G, HUO Y. Recent advances in high-power and high-energy multicore fiber lasers[J].Proceedings of the SPIE, 2004,5335:106-115.
[15]	FANG X H, CHAI L, HU M L, et al. Numerical analysis for structure optimization of seven-core photonic crystal fibers[J].Acta Physica Sinica,2009,58(4):2495-2500 (in Chinese).
[16]	MA L F, LIU M, LI D, et al. A kind of hollow dual-core photonic crystal fiber with zero inter-modal dispersion[J].Chinese Journal of Lasers, 2012, 39(8): 129-134 (in Chinese).
[17]	GENG P Ch. Research on seven-core and bandgap Yb-doped photonic crystal fibers.Qinhuangdao:Yanshan University,2010:21-25 (in Chinese).

Analysis of coupling characteristics of square five-core photonic crystal fibers

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views