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The degree of coherence of the supercontinuum(SC) directly determine the resolution and the precision in many optical apparatus, so how to achieve highly coherent SC is one of the focuses in nonlinear optics. It is shown that modulation instability (MI) is the key element that influences the coherence of SC. Therefore an effective way of achieving coherent SC is to avoid MI and to use other nonlinear effects such as self-phase modulation (SPM). We design a kind of photonic crystal fiber (PCF) which has an all-normal group velocity dispersion (GVD) profile. After numerical investigation on the generation of SC in the PCF we obtain the degrees of the SC in different lengths. Results indicate that for the generated SC by pumping 50 cm of this PCF with TFWHM=400 fs unchirped pulse Gaussian pulse can realize high coherence in the entire broadening area on condition that relative power is larger than -80 dB.
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Keywords:
- all-normal group velocity dispersion /
- photonic crystal fiber /
- supercontinuum /
- degree of coherence
[1] Knight J C, Birks T A, Russell P S J, Atkin D M 1996 Opt. Lett. 21 1547
[2] Yu Y Q, Ruan S C, Du C L, Yao J Q 2005 Acta Photonica Sinica 34 482
[3] Hu M L, Wang C Y, Li Y F, Chai L, 2006 Opt.Express 14 1942
[4] Fang P, Yang Z, Wang Q S, Zhao W, Zhang T, Li C 2010 Acta Photo. Sin 39 447 (in Chinese) [方平, 杨直, 王屹山, 赵卫, 张挺, 李成 2010 光子学报 39 447]
[5] Povazay B, Bizheva K, Unterhuber A, Hermann B, Sattmann H, Fercher A F, Drexler W, Apolonski A, Wadsworth W J, Knight J C, Russell P S, Vetterlein M, Scherzer E 2002 Opt. Lett. 27 1800
[6] Wang Y, Tomov I, Nelson J S, Chen Z, Lim H, Wise F 2005 J. Opt. Soc. Am. 22 1492
[7] Dudley J M, Coen S 2004 Opt. Express 12 2423
[8] Paulsen H N, Hilligse K M, Thogersen J, Keiding S R, Larsen J J 2003 Opt. Lett. 28 1123
[9] Rinia H A, Bonn M, Müller M, Vartiainen E M 2007 Chem. Phys. Chem. 8 279
[10] Dudley J M, Coen S 2002 Opt. Lett. 27 13
[11] Humbert G, Wadsworth W, Leon-Saval S, Knight J, Birks T, Russell P S J, Lederer M, Wiesauer D K K, Breuer E, Stifter D 2006 Opt. Express 14 1596
[12] Hooper L E, Mosley P J, Muir A C, Wadsworth W J, Knight J C 2011 Opt. Express 19 4902
[13] Agrawal G P 2007 Nonlinear Fiber Optics (4th ed)(San Diego: Claif) p276
[14] Agrawal G P 2007 Nonlinear Fiber Optics (4th ed)(San Diego:Claif) p120
[15] Dudley J M, Coen S 2006 Rev. Mod. Phys. 78 4
[16] Agrawal G P 2007 Nonlinear Fiber Optics (4th ed)(San Diego: Claif) p79
[17] Kunimasa S, Masanori K 2005 Opt. Express 13 267
[18] Oleg V S, Ronald H, John Z, Menyuk C R 2003 J. Lightwave Technol. 21 61
[19] Wang Y B, Xiong C L, Hou J, Lu Q S, Peng Y, Chen Z L 2011 Acta Phys. Sin. 60 014201 (in Chinese) [王彦斌, 熊春乐, 侯静, 陆启生, 彭杨, 陈子伦 2011 60 014201]
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[1] Knight J C, Birks T A, Russell P S J, Atkin D M 1996 Opt. Lett. 21 1547
[2] Yu Y Q, Ruan S C, Du C L, Yao J Q 2005 Acta Photonica Sinica 34 482
[3] Hu M L, Wang C Y, Li Y F, Chai L, 2006 Opt.Express 14 1942
[4] Fang P, Yang Z, Wang Q S, Zhao W, Zhang T, Li C 2010 Acta Photo. Sin 39 447 (in Chinese) [方平, 杨直, 王屹山, 赵卫, 张挺, 李成 2010 光子学报 39 447]
[5] Povazay B, Bizheva K, Unterhuber A, Hermann B, Sattmann H, Fercher A F, Drexler W, Apolonski A, Wadsworth W J, Knight J C, Russell P S, Vetterlein M, Scherzer E 2002 Opt. Lett. 27 1800
[6] Wang Y, Tomov I, Nelson J S, Chen Z, Lim H, Wise F 2005 J. Opt. Soc. Am. 22 1492
[7] Dudley J M, Coen S 2004 Opt. Express 12 2423
[8] Paulsen H N, Hilligse K M, Thogersen J, Keiding S R, Larsen J J 2003 Opt. Lett. 28 1123
[9] Rinia H A, Bonn M, Müller M, Vartiainen E M 2007 Chem. Phys. Chem. 8 279
[10] Dudley J M, Coen S 2002 Opt. Lett. 27 13
[11] Humbert G, Wadsworth W, Leon-Saval S, Knight J, Birks T, Russell P S J, Lederer M, Wiesauer D K K, Breuer E, Stifter D 2006 Opt. Express 14 1596
[12] Hooper L E, Mosley P J, Muir A C, Wadsworth W J, Knight J C 2011 Opt. Express 19 4902
[13] Agrawal G P 2007 Nonlinear Fiber Optics (4th ed)(San Diego: Claif) p276
[14] Agrawal G P 2007 Nonlinear Fiber Optics (4th ed)(San Diego:Claif) p120
[15] Dudley J M, Coen S 2006 Rev. Mod. Phys. 78 4
[16] Agrawal G P 2007 Nonlinear Fiber Optics (4th ed)(San Diego: Claif) p79
[17] Kunimasa S, Masanori K 2005 Opt. Express 13 267
[18] Oleg V S, Ronald H, John Z, Menyuk C R 2003 J. Lightwave Technol. 21 61
[19] Wang Y B, Xiong C L, Hou J, Lu Q S, Peng Y, Chen Z L 2011 Acta Phys. Sin. 60 014201 (in Chinese) [王彦斌, 熊春乐, 侯静, 陆启生, 彭杨, 陈子伦 2011 60 014201]
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