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The origin of Rayleigh scattering in fiber waveguides is numerically demonstrated, which indicates that the inhomogeneous doping and diameter variations during drawing are the two dominant reasons. And the scattering fiber with a loss as high as 0.54 dB/km is successfully fabricated based on such principles. The overall Rayleigh backscattering intensity of 5 km scattering fiber is 5 dB higher than that of SMF-28 with the same length in telecommunication window. The principle of single-mode random fiber laser is also studied. The emission spectrum is the superposition of a large number of random modes with arbitrary amplitudes and phases, among which only the highest gain modes can lasing through gain competition. In experiment, a single-mode erbium-doped fiber linear laser with a narrow linewidth of 3.5 kHz and a high contrast of 50 dB is achieved by combining with 500 m scattering fiber as the random feedback. The threshold pump current is reduced by 80 mA and the max output power is increased by 3 dBm for the proposed laser compared with those of the laser with 500 m SMF-28 as the feedback. The tunabiltiy of the proposed laser is determined mainly by the fiber Bragg grating.
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Keywords:
- random laser /
- scattering fiber /
- single-mode narrow linewidth
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[4] Wang H Q, Gong Q H 2013 Acta Phys. Sin. 62 214202 (in Chinese) [王慧琴, 龚旗煌 2013 62 214202]
[5] Hu Z J, Miao B, Wang T X, Fu Q, Zhang D G, Ming H, Zhang Q J 2013 Opt. Lett. 38 4644
[6] Hu Z J, Zhang Q, Miao B, Fu Q, Zou G, Chen Y, Luo Y, Zhang D G, Wang P, Ming H, Zhang Q J 2012 Phys. Rev. Lett. 109 253901
[7] Turitsyn S K, Babin S A, EI-Taher A E, Harper P, Churkin D V, Kavlukov S I, Ania-Castañón J D, Karalekas V, Podivilov E V 2010 Nat. Photon. 4 231
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[10] Smirnov S V, Churkin D V 2013 Opt. Express 21 21236
[11] Zhang W L, Rao Y J, Zhu J M, Yang Z X, Wang Z N, Jia H X 2012 Opt. Express 20 14400
[12] Yin G L, Saxena B, Bao X Y 2011 Opt. Express 19 25981
[13] Zhu T, Bao X Y, Chen L 2011 J. Lightwave Technol. 29 1802
[14] Saxena B, Bao X Y, Chen L 2014 Opt. Lett. 39 1038
[15] Pang M, Bao X Y, Chen L, Qin Z G, Lu Y, Lu P 2013 Opt. Express 21 27155
[16] Pang M, Bao X Y, Chen L 2013 Opt. Lett. 38 1866
[17] Pang M, Xie S R, Bao X Y, Zhou D P, Lu Y G, Chen L 2012 Opt. Lett. 37 3129
[18] Puente N P, Chaikina E I, Herath S, Yamilov A 2011 Appl. Opt. 50 802
[19] Gagné M, Kashyap R 2009 Opt. Express 17 19067
[20] Lizárraga N, Puente N P, Chaikina E I, Leskova T A, Méndez E R 2009 Opt. Express 17 395
[21] Gagné M, Kashyap R 2014 Opt. Lett. 39 2755
[22] Zhu T, Chen F Y, Huang S H, Bao X Y 2013 Laser Phys. Lett. 10 055110
[23] Li Y, Lu P, Bao X Y, Ou Z H 2014 Opt. Lett. 39 2294
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[1] Wang K J, Liu J S, L J T 2006 Acta Phys. Sin. 55 3906 (in Chinese) [王可嘉, 刘劲松, 吕健滔 2006 55 3906]
[2] Xu Y, Li Y P, Jin L, Ma X Y, Yang D R 2013 Acta Phys. Sin. 62 084207 (in Chinese) [徐韵, 李云鹏, 金璐, 马向阳, 杨德仁 2013 62 084207]
[3] Christiano J S M, Leonardo S M, Antônio M B, Martinez M A G, Anderson S L G, Cid B A 2007 Phys. Rev. Lett. 99 153903
[4] Wang H Q, Gong Q H 2013 Acta Phys. Sin. 62 214202 (in Chinese) [王慧琴, 龚旗煌 2013 62 214202]
[5] Hu Z J, Miao B, Wang T X, Fu Q, Zhang D G, Ming H, Zhang Q J 2013 Opt. Lett. 38 4644
[6] Hu Z J, Zhang Q, Miao B, Fu Q, Zou G, Chen Y, Luo Y, Zhang D G, Wang P, Ming H, Zhang Q J 2012 Phys. Rev. Lett. 109 253901
[7] Turitsyn S K, Babin S A, EI-Taher A E, Harper P, Churkin D V, Kavlukov S I, Ania-Castañón J D, Karalekas V, Podivilov E V 2010 Nat. Photon. 4 231
[8] Fotiadi A A 2010 Nat. Photon. 4 204
[9] Churkin D V, EI-Taher A E, Vatnik I D, Ania-Castañón J D, Harper P, Podivilov E V, Babin S A, Turitsyn S K 2012 Opt. Express 20 11178
[10] Smirnov S V, Churkin D V 2013 Opt. Express 21 21236
[11] Zhang W L, Rao Y J, Zhu J M, Yang Z X, Wang Z N, Jia H X 2012 Opt. Express 20 14400
[12] Yin G L, Saxena B, Bao X Y 2011 Opt. Express 19 25981
[13] Zhu T, Bao X Y, Chen L 2011 J. Lightwave Technol. 29 1802
[14] Saxena B, Bao X Y, Chen L 2014 Opt. Lett. 39 1038
[15] Pang M, Bao X Y, Chen L, Qin Z G, Lu Y, Lu P 2013 Opt. Express 21 27155
[16] Pang M, Bao X Y, Chen L 2013 Opt. Lett. 38 1866
[17] Pang M, Xie S R, Bao X Y, Zhou D P, Lu Y G, Chen L 2012 Opt. Lett. 37 3129
[18] Puente N P, Chaikina E I, Herath S, Yamilov A 2011 Appl. Opt. 50 802
[19] Gagné M, Kashyap R 2009 Opt. Express 17 19067
[20] Lizárraga N, Puente N P, Chaikina E I, Leskova T A, Méndez E R 2009 Opt. Express 17 395
[21] Gagné M, Kashyap R 2014 Opt. Lett. 39 2755
[22] Zhu T, Chen F Y, Huang S H, Bao X Y 2013 Laser Phys. Lett. 10 055110
[23] Li Y, Lu P, Bao X Y, Ou Z H 2014 Opt. Lett. 39 2294
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