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According to the wavelength characteristic of fiber coupler,its spectrum characteristics was analysed as a comb filter, and all-fiber comb-filter based on fiber couplers with different wavelength intervals were experimentally fabricated by splicing a section of single mode twin-core fiber (TCF) of different lengths between two single mode fibers (SMFs),and the extinction ratio is 25 dB. CO2 laser was used to trim the wavelength firstly,which results in the spectrum shifting to long wavelength and the change of extinction ratio.The trimming is based on the mechanism of residual stress and melting deformation between fiber and CO2 laser,and hydrogen-loaded TCF was used to improve the trimming efficiency.
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Keywords:
- two core fiber coupler /
- comb-filter /
- CO2 laser /
- residual stress
[1] Yuan L B,Yang J,Liu Zh H,Sun J X 2006 Opt. Lett. 31 2692
[2] Huang Y L,Dong X F,Li J,Dong X Y 2005 Chinses J. Lasers 32 423 (in Chinese) [黄勇林、兴 法、李 杰、董孝义 2005 中国激光 32 423]
[3] Rao Y J, Deng M, Duan D W,Zhu T 2008 Sensors and Actuators A: Physical 148 33
[4] Fang X J,Richard O.Claus 1995 Opt. Lett. 20 2146
[5] Feng S C, Xu O,Lu S H,Jian S S 2009 Chin. Phys. Lett. 26 064208
[6] Ashby S J, Charters R B, Love J D, Ladouceur F, Elisa M C 1997 Electron. Lett. 33 1696
[7] Atkins G R, Arkwright J W, Hewlett S J 1994 Electron. Lett. 30 2165
[8] Liu C Y,Ye H A,Cao X 2006 Acta Opt. Sin. 26 1623 (in Chinese) [柳春郁、叶红安、曹 雪 2006 光学学报 26 1623]
[9] Fan X M,Zheng Y,Sun Q B,Wang G J,Zeng H X,Bing P B,Ren H Y 2008 Laser and Infrared 38 541 (in Chinese) [樊心民、郑 义、孙启兵、王冠军、曾灏宪、邴丕彬、任怀远 2008 红外与激光 38 541] 〖10] Wang Y P 2003 Ph. D. Dissertation (Chongqing, Chongqing University) (in Chinese) [王义平 2003 博士学位论文 重庆:重庆大学]
[10] Kim B H,Park Y, kim D Y, Paek U C, Han W T 2002 OFC WA3 173
[11] Kakarantzas G,Dimmick T E,Birks T A,Le Poux R,J Russell P St 2001 Opt. Lett. 26 1137
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[1] Yuan L B,Yang J,Liu Zh H,Sun J X 2006 Opt. Lett. 31 2692
[2] Huang Y L,Dong X F,Li J,Dong X Y 2005 Chinses J. Lasers 32 423 (in Chinese) [黄勇林、兴 法、李 杰、董孝义 2005 中国激光 32 423]
[3] Rao Y J, Deng M, Duan D W,Zhu T 2008 Sensors and Actuators A: Physical 148 33
[4] Fang X J,Richard O.Claus 1995 Opt. Lett. 20 2146
[5] Feng S C, Xu O,Lu S H,Jian S S 2009 Chin. Phys. Lett. 26 064208
[6] Ashby S J, Charters R B, Love J D, Ladouceur F, Elisa M C 1997 Electron. Lett. 33 1696
[7] Atkins G R, Arkwright J W, Hewlett S J 1994 Electron. Lett. 30 2165
[8] Liu C Y,Ye H A,Cao X 2006 Acta Opt. Sin. 26 1623 (in Chinese) [柳春郁、叶红安、曹 雪 2006 光学学报 26 1623]
[9] Fan X M,Zheng Y,Sun Q B,Wang G J,Zeng H X,Bing P B,Ren H Y 2008 Laser and Infrared 38 541 (in Chinese) [樊心民、郑 义、孙启兵、王冠军、曾灏宪、邴丕彬、任怀远 2008 红外与激光 38 541] 〖10] Wang Y P 2003 Ph. D. Dissertation (Chongqing, Chongqing University) (in Chinese) [王义平 2003 博士学位论文 重庆:重庆大学]
[10] Kim B H,Park Y, kim D Y, Paek U C, Han W T 2002 OFC WA3 173
[11] Kakarantzas G,Dimmick T E,Birks T A,Le Poux R,J Russell P St 2001 Opt. Lett. 26 1137
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