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We present a method of achieving a flat-top Brillouin gain spectrum (BGS) with a controllable bandwidth based on multiple-lines pump modulation in a CS2/CCl4 mixture liquid-core optical fiber. The influences of the pump spectrum separation, the intensity of each spectrum line, and the mixing ratio of core liquid media on the BGS are theoretically investigated, and the conditions of producing the flat-top BGS with an adjustable bandwidth are obtained. Results show that 2–9 spectral lines are generated based on single-frequency and multifrequency modulation using an intensity or phase modulator. The flat-top BGS with bandwidths of 50 MHz–2 GHz are obtained by controlling spectrum separation, the intensity ratio of each spectral line and CS2 volume fraction. This method has advantages of convenient operation and wide bandwidth range. It can be applied in Brillouin amplification with high gain and low distortion, and hence satisfies the requirements of weak signal detection and slow light systems.
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Keywords:
- stimulated Brillouin scattering /
- Brillouin gain spectrum /
- multiple-lines pump modulation /
- liquid-core optical fiber
[1] Dong Y K, Zhang H Y, Chen L, Bao X Y 2012 Appl. Opt. 51 1229
[2] Zhang L, Zhang D, Shi J L, Shi J W, Gong W P, Liu D H 2012 Appl. Phys. B 109 137
[3] Hasi W L J, Wang X Y, Guo X Y, Zhong Z M, Fan R Q, Lin D Y, He W M, Lu Z W 2012 Acta Phys. Sin. 61 144207 (in Chinese) [哈斯乌力吉, 王雪阳, 郭翔宇, 仲召明, 范瑞清, 林殿阳, 何伟明, 吕志伟 2012 物理学报 61 144207]
[4] Liu D H, Shi J W, Chen X D, Ouyang M, Gong W P 2010 Front. Phys. China 5 82
[5] Wise A, Tur M, Zadok A 2011 Opt. Express 19 21945
[6] Lu Z W, Ba D X, Zhu C Y, Dong Y K 2012 Appl. Phys. B 109 55
[7] Zhu Z, Dawes A M C, Gauthier D J, Zhang L, Willner A E 2007 J. Lightwave Technol. 25 201
[8] Herr’aez M G, Song K Y, Th’evenaz L 2006 Opt. Express 14 1395
[9] Lu Z W, Dong Y K, Li Q 2007 Opt. Express 15 1871
[10] Ba D X, Lu Z W, Zhu C Y 2011 Academic International Symposium on Optoelectronics and Microelectronics Technology (AISOMT), Harbin, Oct.12-16 2011 p108
[11] Dong Y K, Lu Z W, Li Q, Liu Y F 2008 J. Opt. Soc. Am. B 25 C109
[12] Sakamoto T, Yamamoto T, Shiraki K, Kurashima T 2008 Opt. Express 16 8026
[13] Dong Y K 2008 Ph. D. Dissertation (Harbin: Harbin Institute of Technology) (in Chinese) [董永康 2008 博士学位论文 (哈尔滨: 哈尔滨工业大学)]
[14] Kieu K, Schneebeli L, Merzlyak E, Hales J M, Desimone A, Perry J W, Norwood R A, Peyghambarian N 2012 Opt. Lett. 37 942
[15] Kieu K, Schneebeli L, Norwood R A, Peyghambarian N 2012 Opt. Express 20 8148
[16] Kieu K, Churin D, Schneebeli L, Norwood R A, Peyghambarian N 2013 Opt. Lett. 38 543
[17] Herrera O D, Schneebeli L, Kieu K, Norwood R A, Peyghambarian N 2013 Opt. Express 21 8821
[18] Gao W, Sun D, Bi Y F, Li J Y 2012 Appl. Phys. B 107 355
[19] Gao W, Hu X B, Sun D, Li J Y 2012 Opt. Express 20 20715
[20] Xu Y H 2010 Ph. D. Dissertation (Shanghai: Shanghai Jiao Tong University) (in Chinese) [许永豪 2010 博士学位论文 (上海: 上海交通大学)]
[21] Dai F F, Xu Y H, Chen X F 2010 Chin. Opt. Lett. 8 14
[22] Hasi W L J, Lu Z W, Liu S J, He W M, Zhao X Y, Zhang W 2008 Acta Phys. Sin. 57 2976 (in Chinese) [哈斯乌力吉, 吕志伟, 刘述杰, 何伟明, 赵晓彦, 张伟 2008 物理学报 57 2976]
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[1] Dong Y K, Zhang H Y, Chen L, Bao X Y 2012 Appl. Opt. 51 1229
[2] Zhang L, Zhang D, Shi J L, Shi J W, Gong W P, Liu D H 2012 Appl. Phys. B 109 137
[3] Hasi W L J, Wang X Y, Guo X Y, Zhong Z M, Fan R Q, Lin D Y, He W M, Lu Z W 2012 Acta Phys. Sin. 61 144207 (in Chinese) [哈斯乌力吉, 王雪阳, 郭翔宇, 仲召明, 范瑞清, 林殿阳, 何伟明, 吕志伟 2012 物理学报 61 144207]
[4] Liu D H, Shi J W, Chen X D, Ouyang M, Gong W P 2010 Front. Phys. China 5 82
[5] Wise A, Tur M, Zadok A 2011 Opt. Express 19 21945
[6] Lu Z W, Ba D X, Zhu C Y, Dong Y K 2012 Appl. Phys. B 109 55
[7] Zhu Z, Dawes A M C, Gauthier D J, Zhang L, Willner A E 2007 J. Lightwave Technol. 25 201
[8] Herr’aez M G, Song K Y, Th’evenaz L 2006 Opt. Express 14 1395
[9] Lu Z W, Dong Y K, Li Q 2007 Opt. Express 15 1871
[10] Ba D X, Lu Z W, Zhu C Y 2011 Academic International Symposium on Optoelectronics and Microelectronics Technology (AISOMT), Harbin, Oct.12-16 2011 p108
[11] Dong Y K, Lu Z W, Li Q, Liu Y F 2008 J. Opt. Soc. Am. B 25 C109
[12] Sakamoto T, Yamamoto T, Shiraki K, Kurashima T 2008 Opt. Express 16 8026
[13] Dong Y K 2008 Ph. D. Dissertation (Harbin: Harbin Institute of Technology) (in Chinese) [董永康 2008 博士学位论文 (哈尔滨: 哈尔滨工业大学)]
[14] Kieu K, Schneebeli L, Merzlyak E, Hales J M, Desimone A, Perry J W, Norwood R A, Peyghambarian N 2012 Opt. Lett. 37 942
[15] Kieu K, Schneebeli L, Norwood R A, Peyghambarian N 2012 Opt. Express 20 8148
[16] Kieu K, Churin D, Schneebeli L, Norwood R A, Peyghambarian N 2013 Opt. Lett. 38 543
[17] Herrera O D, Schneebeli L, Kieu K, Norwood R A, Peyghambarian N 2013 Opt. Express 21 8821
[18] Gao W, Sun D, Bi Y F, Li J Y 2012 Appl. Phys. B 107 355
[19] Gao W, Hu X B, Sun D, Li J Y 2012 Opt. Express 20 20715
[20] Xu Y H 2010 Ph. D. Dissertation (Shanghai: Shanghai Jiao Tong University) (in Chinese) [许永豪 2010 博士学位论文 (上海: 上海交通大学)]
[21] Dai F F, Xu Y H, Chen X F 2010 Chin. Opt. Lett. 8 14
[22] Hasi W L J, Lu Z W, Liu S J, He W M, Zhao X Y, Zhang W 2008 Acta Phys. Sin. 57 2976 (in Chinese) [哈斯乌力吉, 吕志伟, 刘述杰, 何伟明, 赵晓彦, 张伟 2008 物理学报 57 2976]
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