太赫兹双芯光子带隙光纤定向耦合器

白晋军; 王昌辉; 侯宇; 范飞; 常胜江

doi:10.7498/aps.61.108701

摘要

提出了一种低损耗、宽频段太赫兹双芯光子带隙光纤定向耦合器,光纤的包层由亚波长尺度呈三角晶格排列的空气孔组成, 两个纤芯分别由去掉7个空气孔构成.利用全矢量有限元法对光纤的色散、耦合特性以及损耗特性进行了理论分析. 研究表明,这种耦合器的损耗系数小于0.021 cm-1,更重要的是可以实现0.14 THz范围内的宽频定向耦合. 这种定向耦合器在太赫兹通信系统中滤波、波分复用、偏振分离和开关等技术中有潜在的应用价值.

关键词:

Abstract

A low-loss and broadband terahertz twin-core photonic band-gap fiber directional coupler is proposed, which consists of a cladding with a triangular lattice array of sub-wavelength air rods and two cores formed respectively by omitting seven nearby air rods. The group velocity dispersion, the coupling and the loss of the fibers are investigated by using a full-vector finite element method. The numerical simulations show that the loss coefficient of the coupler is less than 0.021 cm-1, and the coupling broadband of 0.14 THz can be realized. The directional coupler has potential applications in terahertz communication systems, such as filtering, wavelength-division multiplexing, polarization isolation, switching and so on.

Keywords:

作者及机构信息

1.
天津工业大学电子与信息工程学院, 天津 300387;

2.
南开大学现代光学研究所, 天津 300071

基金项目: 国家高技术研究发展计划(863计划) (批准号: 2011AA010205)、国家自然科学基金(批准号: 61171027)、天津市自然科学基金重点项目(批准号: 10JCZDJC15200)和教育部博士点基金(批准号: 20090031110033)资助的课题.

Authors and contacts

1.
School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300160, China;

2.
Institute of Modern Optics, Nankai University, Tianjin 300387, China

Funds: Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA010205), National Natural Science Foundation of China (Grant No. 61171027), Natural Science Foundation of Tianjin of China (Grant No. 10JCZDJC15200) and Doctoral Fund of Ministry of Education of China (Grant No. 20090031110033).

参考文献

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[5]	Han P Y, Cho G C, Zhang X C 2000 Opt. Lett. 25 242
[6]	Mickan S P, Menikh A, Liu H B, Mannella C A, MacColl R, Abbott D, Munch J, Zhang X C 2002 Phys. Medic. Biol. 47 3789
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[8]	Ma S H, Shi Y L, Xu X L, Yan W, Yang Y P, Wang L 2006 Acta Phys. Sin. 55 4091 [马士华, 施宇蕾, 徐新龙, 严伟, 杨玉平, 汪力 2006 物理学报 55 4091]
[9]	Ma X J, Zhao H W, Dai B, Liu G F 2008 Acta Phys. Sin. 57 3429 [马晓菁, 赵红卫, 代斌, 刘桂锋 2008 物理学报 57 3429]
[10]	Zhang X B, Shi W 2008 Acta Phys. Sin. 57 4984 [张显斌, 施卫 2008 物理学报 57 4984]
[11]	McGowan R W, Gallot G, Grischkowsky D 1999 Opt. Lett. 24 1431
[12]	Gallot G, Jamison S P, McGowan R W, Grischkowsky D 2000 J. Opt. Soc. Am. B 17 851
[13]	Chen L J, Chen H W, Kao T F, Lu J Y, Sun C K 2006 Opt. Lett. 31 308
[14]	Lu J Y, Yu C P, Chang H C, Chen H W, Li Y T, Pan C L, Sun C K 2008 Appl. Phys. Lett. 92 064105-1
[15]	Hassani A, Dupuis A, Skorobogatiya M 2008 Appl. Phys. Lett. 92 071101-1
[16]	Dupuis A, Allard J F, Morris D, Stoeffler K, Dubois C, Skorobogatiy M 2009 Opt. Express 17 8012
[17]	Nielsen K, Rasmussen H K, Jepsen P U, Bang O 2010 Opt. Lett. 35 2879
[18]	Chantry G W, Fleming J W, Smith P M, Cudby M, Willis H A 1971 Chem. Phys. Lett. 10 473
[19]	Wang Z, Kai G, Liu Y, Liu J, Zhang C, Sun T, Wang C, Zhang W, Yuan S, Dong X 2005 Opt. Lett. 30 2542
[20]	Saitoh K, Sato Y, Koshiba M 2003 Opt. Express 11 3188
[21]	Atakaramians S, Afshar V S, Fischer B M, Abbott D, Monro T M 2008 Opt. Express 16 8845

施引文献

[1]	O'Hara J, Grischkowsky D 2001 Opt. Lett. 26 1918
[2]	Lee A W M, Hu Q 2005 Opt. Lett. 30 2563
[3]	Stoik C D, Bohn M J, Blackshire J L 2008 Opt. Express 16 17039
[4]	Tielrooij K J, Timmer R L A, Bakker H J, Bonn M 2009 Phys. Rev. Lett. 100 198303-1
[5]	Han P Y, Cho G C, Zhang X C 2000 Opt. Lett. 25 242
[6]	Mickan S P, Menikh A, Liu H B, Mannella C A, MacColl R, Abbott D, Munch J, Zhang X C 2002 Phys. Medic. Biol. 47 3789
[7]	Wang W N, Li Y B, Yue W W 2005 Acta Phys. Sin. 54 781 [王卫宁, 李元波, 岳伟伟 2005 物理学报 54 781]
[8]	Ma S H, Shi Y L, Xu X L, Yan W, Yang Y P, Wang L 2006 Acta Phys. Sin. 55 4091 [马士华, 施宇蕾, 徐新龙, 严伟, 杨玉平, 汪力 2006 物理学报 55 4091]
[9]	Ma X J, Zhao H W, Dai B, Liu G F 2008 Acta Phys. Sin. 57 3429 [马晓菁, 赵红卫, 代斌, 刘桂锋 2008 物理学报 57 3429]
[10]	Zhang X B, Shi W 2008 Acta Phys. Sin. 57 4984 [张显斌, 施卫 2008 物理学报 57 4984]
[11]	McGowan R W, Gallot G, Grischkowsky D 1999 Opt. Lett. 24 1431
[12]	Gallot G, Jamison S P, McGowan R W, Grischkowsky D 2000 J. Opt. Soc. Am. B 17 851
[13]	Chen L J, Chen H W, Kao T F, Lu J Y, Sun C K 2006 Opt. Lett. 31 308
[14]	Lu J Y, Yu C P, Chang H C, Chen H W, Li Y T, Pan C L, Sun C K 2008 Appl. Phys. Lett. 92 064105-1
[15]	Hassani A, Dupuis A, Skorobogatiya M 2008 Appl. Phys. Lett. 92 071101-1
[16]	Dupuis A, Allard J F, Morris D, Stoeffler K, Dubois C, Skorobogatiy M 2009 Opt. Express 17 8012
[17]	Nielsen K, Rasmussen H K, Jepsen P U, Bang O 2010 Opt. Lett. 35 2879
[18]	Chantry G W, Fleming J W, Smith P M, Cudby M, Willis H A 1971 Chem. Phys. Lett. 10 473
[19]	Wang Z, Kai G, Liu Y, Liu J, Zhang C, Sun T, Wang C, Zhang W, Yuan S, Dong X 2005 Opt. Lett. 30 2542
[20]	Saitoh K, Sato Y, Koshiba M 2003 Opt. Express 11 3188
[21]	Atakaramians S, Afshar V S, Fischer B M, Abbott D, Monro T M 2008 Opt. Express 16 8845

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