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A novel bend-resistant large-mode-area silica photonic crystal fiber (PCF) is proposed and fabricated. With the advantage of flexible design on the PCF configuration, the properties of large-mode-area, single mode propagation and low bend loss can be simultaneously achieved by intentionally designing the position of defect and the size of air holes. Modal properties and bending loss of the actual PCF can be evaluated with previous model for assessing the properties of the actual fiber. Numerical results demonstrate that this fiber has an extremely large mode area of 2812 μm2, low confine loss of 0.00024 dB/m of the fundamental mode and high confine loss of over 1.248 dB/m of higher order mode at a wavelength of 1064 nm when the optical fibre is kept straight. The large difference in propagation loss levels between fundamental mode and higher order modes ensures the efficient single-mode propagation in the fiber core. Furthermore, the effects of bend radius and bend direction angle on bend loss are investigated when the fiber is bent. Even if bend radius is as small as 5 cm, bend loss of this fiber is still below 10-3 dB/m. It is found that the proposed fiber has the negligible bending loss at a bending radius of 30 cm with the bending angle ranging from -60° to 60°. These results illustrate that the fabricated fiber possesses the better bend resistant properties and can overcome the sensitivity to bend direction angle caused by the asymmetric structure. The fabricated fiber will play an important role in developing high power fiber laser, fiber amplifier and high power delivery application.
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Keywords:
- photonic crystal fiber /
- large-mode-area /
- low bend loss /
- bend direction angle
[1] Dawson J W, Messerly M J, Beach R J, Shverdin M Y, Stappaerts E A, Sridharan A K, Pax P H, Heebner J E, Siders C W, Barty C P J 2008 Opt. Express 16 13240
[2] Tnnermann A, Schreiber T, Röser F, Liem A, Höfer S, Zellmer H, Nolte S, Limpert J 2005 J. Phys. B 38 S681
[3] Li M J, Chen X, Liu A, Wang G S, Walton D T, Zenteno L A 2009 J. Lightw. Technol. 27 3010
[4] Knight J C, Birks T A, Cregan R F, Russell P S, de Sandre J P 1998 Electron. Lett. 34 1347
[5] Limpert J, Schmidt O, Rothhardt J, Röser F, Schreiber T, Tnnermann A, Ermeneux S, Yvernault P, Salin F 2006 Opt. Express 14 2715
[6] Schmidt O, Rothhardt J, Eidam T, Röser F, Limpert J, Tnner-mann A, Hansen K P, Jakobsen C, Broeng J 2008 Opt. Express 16 3918
[7] Vogel M M, Abdou-Ahmed M, Voss A, Graf T 2009 Opt. Lett. 34 2876
[8] Dong L, Wu T W, McKay H A, Fu L, Li J, Winful H 2009 IEEE J. Sel. Topics Quantum Electron. 15 47
[9] Wu T W, Dong L, Winful H 2008 Opt. Express 16 4278
[10] Ward B G 2008 Opt. Express 16 8532
[11] Tsuchida Y, Saitoh K, Koshiba M 2007 Opt. Express 15 1794
[12] Guo Y Y, Hou L T 2010 Acta Phys. Sin. 59 4041 (in Chinese) [郭艳艳, 侯蓝田 2010 59 4041]
[13] Napierala M, Nasilwski T, Bere\’s-Pawlik E, Berghmans F, Wójcik J, Thienpont H 2010 Opt. Express 18 15408.
[14] Napierala M, Nasilwski T, Bere\’s-Pawlik E, Mergo P, Berghmans F, Thienpont H 2011 Opt. Express 19 22628
[15] Chen M Y, Zhang Y K 2011 J. Lightwave Technol. 29 2216
[16] Wang L W, Lou S Q, Chen W G, Li H L 2010 Chin. Phys. B 19 4209
[17] Olszewski J, Szpulak M, Martynkien T, Urban W, Berghmans F, Nasilowski T, Thienpont H 2007 Opt. Commun. 269 261
[18] Tsuchida Y, Saitoh K, Koshiba M 2005 Opt. Express 13 4770
[19] Guo S, Wu F, Albin S 2004 Opt. Express 12 3341
[20] Boag A, Boag A, Mittra R 1994 Microw. Opt. Technol. Lett. 7 395
[21] Uranus H, Hoekstra H 2004 Opt. Express 12 2795
[22] White T P, McPhedran R C, de Sterks C M, Botten L C, Steel M J. 2001 Opt. Lett. 26 1660
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[1] Dawson J W, Messerly M J, Beach R J, Shverdin M Y, Stappaerts E A, Sridharan A K, Pax P H, Heebner J E, Siders C W, Barty C P J 2008 Opt. Express 16 13240
[2] Tnnermann A, Schreiber T, Röser F, Liem A, Höfer S, Zellmer H, Nolte S, Limpert J 2005 J. Phys. B 38 S681
[3] Li M J, Chen X, Liu A, Wang G S, Walton D T, Zenteno L A 2009 J. Lightw. Technol. 27 3010
[4] Knight J C, Birks T A, Cregan R F, Russell P S, de Sandre J P 1998 Electron. Lett. 34 1347
[5] Limpert J, Schmidt O, Rothhardt J, Röser F, Schreiber T, Tnnermann A, Ermeneux S, Yvernault P, Salin F 2006 Opt. Express 14 2715
[6] Schmidt O, Rothhardt J, Eidam T, Röser F, Limpert J, Tnner-mann A, Hansen K P, Jakobsen C, Broeng J 2008 Opt. Express 16 3918
[7] Vogel M M, Abdou-Ahmed M, Voss A, Graf T 2009 Opt. Lett. 34 2876
[8] Dong L, Wu T W, McKay H A, Fu L, Li J, Winful H 2009 IEEE J. Sel. Topics Quantum Electron. 15 47
[9] Wu T W, Dong L, Winful H 2008 Opt. Express 16 4278
[10] Ward B G 2008 Opt. Express 16 8532
[11] Tsuchida Y, Saitoh K, Koshiba M 2007 Opt. Express 15 1794
[12] Guo Y Y, Hou L T 2010 Acta Phys. Sin. 59 4041 (in Chinese) [郭艳艳, 侯蓝田 2010 59 4041]
[13] Napierala M, Nasilwski T, Bere\’s-Pawlik E, Berghmans F, Wójcik J, Thienpont H 2010 Opt. Express 18 15408.
[14] Napierala M, Nasilwski T, Bere\’s-Pawlik E, Mergo P, Berghmans F, Thienpont H 2011 Opt. Express 19 22628
[15] Chen M Y, Zhang Y K 2011 J. Lightwave Technol. 29 2216
[16] Wang L W, Lou S Q, Chen W G, Li H L 2010 Chin. Phys. B 19 4209
[17] Olszewski J, Szpulak M, Martynkien T, Urban W, Berghmans F, Nasilowski T, Thienpont H 2007 Opt. Commun. 269 261
[18] Tsuchida Y, Saitoh K, Koshiba M 2005 Opt. Express 13 4770
[19] Guo S, Wu F, Albin S 2004 Opt. Express 12 3341
[20] Boag A, Boag A, Mittra R 1994 Microw. Opt. Technol. Lett. 7 395
[21] Uranus H, Hoekstra H 2004 Opt. Express 12 2795
[22] White T P, McPhedran R C, de Sterks C M, Botten L C, Steel M J. 2001 Opt. Lett. 26 1660
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