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The coupled-mode equations in photonics crystal fiber with triangular structure triple-core (TTC-PCF) are achieved based on the coupled-mode theory, thereby the directional coupling between the cores in this structure is numerically studied in detail. The influences of the fiber structure and the incident wavelength on the coupling coefficient, and the effect of the amplitude ratio of the inject beams at the input end on the transfer of energy between the cores are analyzed. From the results, it can follow that continuous modulation of the coupling intensity between the cores can be achieved by changing the amplitude ratio of the inject beams. The coupled-mode theory and the beam propagation method present the results well consistent with each other. The unique coupling transmission performance of the TTC-PCF shows its possible applications in the design and the preparation of coupling strength continuously tunable fiber directional coupler and large mode field fiber lasers.
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Keywords:
- photonic crystal fiber /
- coupled-mode theory /
- coupling coefficient /
- triangular structure
[1] Knight J C, Birks T A, Russell P S J, Atkin D M 1996 Opt. Lett. 21 1547
[2] Birks T A, Knight J C, Russell P S J 1997 Opt. Lett. 22 961
[3] Broderick N G R, Monro T M, Bennett P J, Richardson D J 1999 Opt. Lett. 24 1395
[4] Zhang X J, Zhao J L, Hou J P 2007 Acta Phys. Sin. 56 4668(in Chinese)[张晓娟、赵建林、侯建平 2007 56 4668]
[5] Saitoh K, Sato Y, Koshiba M 2003 Opt. Express 11 3188
[6] Fang X H, Hu M L, Li Y F, Chai L, Wang Q Y 2009 Acta Phys. Sin. 58 2495 (in Chinese)[方晓惠、胡明列、栗岩锋、柴路、王清月 2009 58 2495]
[7] Khan K R, Wu T X, Christodoulides D N, Stegeman G I 2008 Opt. Express 16 9417
[8] Yu X, Shum P 2005 Proc. SPIE 5634 571
[9] Michaille L, Taylor D M, Bennett C R, Shepherd T J, Ward B G 2008 Opt. Lett. 33 71
[10] Fu B, Li S G, Yao Y Y, Zhang L, Zhang M Y, Liu S Y 2009 Acta Phys. Sin. 58 7708 (in Chinese)[付 博、李曙光、姚艳艳、张 磊、张美艳、刘司英 2009 58 7708]
[11] Mothe N, Bin P D 2009 Opt. Express 17 15778
[12] Reichenbach K L, Xu C 2005 Opt. Express 13 10336
[13] Varshney S K, Florous N J, Saitoh K, Koshiba M 2006 Opt. Express 14 1982
[14] Fogli F, Saccomandi L, Bassi P, Bellanca G, Trillo S 2002 Opt. Express 10 54
[15] Kim B, Kim T H, Cui L, Chung Y 2009 Opt. Express 17 15502
[16] Padden W E P, Van Eijkelenborg M A, Argyros A, Issa N A 2004 Appl. Phys. Lett. 84 1689
[17] Michaille L, Bennett C R, Taylor D M, Shepherd T J, Broeng J, Simonsen H R, Petersson A 2005 Opt. Lett. 30 1668
[18] Haus H A, Huang W P, Snyder A W 1989 Opt. Lett. 14 1222
[19] Huang W P 1994 J. Opt. Soc. Am. A 11 963
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[1] Knight J C, Birks T A, Russell P S J, Atkin D M 1996 Opt. Lett. 21 1547
[2] Birks T A, Knight J C, Russell P S J 1997 Opt. Lett. 22 961
[3] Broderick N G R, Monro T M, Bennett P J, Richardson D J 1999 Opt. Lett. 24 1395
[4] Zhang X J, Zhao J L, Hou J P 2007 Acta Phys. Sin. 56 4668(in Chinese)[张晓娟、赵建林、侯建平 2007 56 4668]
[5] Saitoh K, Sato Y, Koshiba M 2003 Opt. Express 11 3188
[6] Fang X H, Hu M L, Li Y F, Chai L, Wang Q Y 2009 Acta Phys. Sin. 58 2495 (in Chinese)[方晓惠、胡明列、栗岩锋、柴路、王清月 2009 58 2495]
[7] Khan K R, Wu T X, Christodoulides D N, Stegeman G I 2008 Opt. Express 16 9417
[8] Yu X, Shum P 2005 Proc. SPIE 5634 571
[9] Michaille L, Taylor D M, Bennett C R, Shepherd T J, Ward B G 2008 Opt. Lett. 33 71
[10] Fu B, Li S G, Yao Y Y, Zhang L, Zhang M Y, Liu S Y 2009 Acta Phys. Sin. 58 7708 (in Chinese)[付 博、李曙光、姚艳艳、张 磊、张美艳、刘司英 2009 58 7708]
[11] Mothe N, Bin P D 2009 Opt. Express 17 15778
[12] Reichenbach K L, Xu C 2005 Opt. Express 13 10336
[13] Varshney S K, Florous N J, Saitoh K, Koshiba M 2006 Opt. Express 14 1982
[14] Fogli F, Saccomandi L, Bassi P, Bellanca G, Trillo S 2002 Opt. Express 10 54
[15] Kim B, Kim T H, Cui L, Chung Y 2009 Opt. Express 17 15502
[16] Padden W E P, Van Eijkelenborg M A, Argyros A, Issa N A 2004 Appl. Phys. Lett. 84 1689
[17] Michaille L, Bennett C R, Taylor D M, Shepherd T J, Broeng J, Simonsen H R, Petersson A 2005 Opt. Lett. 30 1668
[18] Haus H A, Huang W P, Snyder A W 1989 Opt. Lett. 14 1222
[19] Huang W P 1994 J. Opt. Soc. Am. A 11 963
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