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1. 兰州交通大学 数理与软件工程学院,甘肃 兰州,730070
2. 西南交通大学 峨眉校区电气工程系,四川 峨眉,614202
收稿日期:2010-03-20,
修回日期:2010-06-18,
网络出版日期:2010-07-30,
纸质出版日期:2010-07-20
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任恩恩, 鲁 彦, 鲁怀伟, 罗冠炜. 全光纤MZI型三信道波长交错滤波器的改进[J]. 光学精密工程, 2010,18(7): 1483-1490
REN En-en, LU Yan, LU Huai-wei, LUO Guan-wei. Improvement of all-fiber three-channel interleaver based on Mach-Zehnder interferometer[J]. 光学精密工程, 2010,18(7): 1483-1490
任恩恩, 鲁 彦, 鲁怀伟, 罗冠炜. 全光纤MZI型三信道波长交错滤波器的改进[J]. 光学精密工程, 2010,18(7): 1483-1490 DOI: 10.3788/OPE.20101807.1483.
REN En-en, LU Yan, LU Huai-wei, LUO Guan-wei. Improvement of all-fiber three-channel interleaver based on Mach-Zehnder interferometer[J]. 光学精密工程, 2010,18(7): 1483-1490 DOI: 10.3788/OPE.20101807.1483.
为改善全光纤三信道波长交错器的输出特性
提出了一种不对称结构的三光纤臂Mach-Zehnder干涉仪(A-MZI)
这种光纤干涉仪由一个一字型33 单模光纤耦合器和一个品字型33 单模光纤耦合器以及三条光纤干涉臂组成
其中一字型33 单模光纤耦合器作为输入耦合器
品字型33 单模光纤耦合器作为输出耦合器。推导了该器件的输出表达式
并进行了数值模拟。模拟结果表明
与常规的全光纤MZI型三信道波长交错器(C-MZI)相比
本文提出的交错滤波器的信道间功率旁瓣降低了约13.6 dB
并且具有对器件参数偏差不敏感等优点。用光纤熔融拉锥法实验制作了该器件
实验结果与理论分析吻合得很好
实验样品的信道间功率旁瓣值<-34.6 dB
插入损耗< 1.0 dB
信道隔离度>30 dB。
In order to improve the transmission performance of the all-fiber three-channel interleaver
a novel asymmetrical structure of a Mach-Zehnder interferometer(A-MZI) with three fiber arms is proposed. The A-MZI consists of a fused planar 33 coupler
a fused triangular 33 single mode fiber coupler and three fiber arms in series
in which the planar 33 coupler is used as an input coupler
and the triangular 33 coupler as an output coupler. The output expression is derived and the numerical simulation is performed.The simulation indicates that the crosstalk characteristics and the coupling-coefficient-angle tolerance can be improved greatly
and the sidelobe level of channel of the proposed device has been reduced more than 13.6 dB as compared with that of the conventional all-fiber three-channel interleaver. A interleaver is fabricated with the fused biconical taper technics in an experiment. The experimental results are in good agreement with the analytical ones. The result shows that the measured sidelobe level and the insertion loss are less than -34.6 dB and 1.0 dB
respectively
and the channel isolation is higher than 30 dB.
LU S, YAN Y B,JIN G F. A novel DWDM interleaver scheme based on phased-arraywavelength demultiplexer with multimode interference couplers[J]. Chinese Opt. Lett., 2004,2(6):314-315.
LU H W, ZHANG Y E, LUO G W. Study of all-fiber flat-top passband interleaver based on 22 and 33 fiber couplers[J].Opt. Commun, 2007,276:116-121.
CAO S, LIN C, YANG C, et al..Gires-Tournois interferometer (BGTI) for DWDM interleaving .in Proc. OFC, Anaheim, CA, 2002:395-396.
LU H W, ZHANG B G, LI M Z, et al..A novel all-fiber optical interleaver with flat-top passband[J].IEEE Photon.Technol Lett., 2006,18:1469-1471.
姚寿铨,王子华. 用三干涉臂马赫-曾德尔干涉仪制成的光纤密集型波分复用器[J]. 光学学报, 2000,20(7):952-956. YAO S Q,WANG Z H. A dense-wavelength-division-multiplexer by using a three arm mach- zehnder interferometer[J]. Acta Optica Sinica., 2000,20(7):952-956.
YAO S,WANG Z H. Theoretical analysis and experiment of 3 arm interferometric DWDM[J].Acta Photonica Sinica., 2000,29(4):339-343.
WEIHS G, RECK M, WEINFURTER H, et al.. All-fiber three-path Mach-Zehnder interferometer[J].Opt. Lett.,1996,21(4):302-304.
潘炜,邹龙方,罗斌,等. 基于马赫一曾德尔干涉仪的全光逻辑异或门理论研究[J]. 光学 精密工程,2005,13(3):339-347. PAN W,ZOU L F,LUO B,et al..Theoretical study of all optical XOR using Mach-Zehnder interferometer[J].Opt. Precision Eng.,2005,13(3):339-347. (in Chinese)
鲁怀伟,张玉娥,罗冠炜. 基于22和33耦合器的级联马赫-曾德干涉仪型波长交错滤波器[J]. 光学 精密工程,2007,15(7):339-347. LU H W, ZHANG Y E, LUO G W..Flat-top interleaver of cascaded M-Z interferometer with 22 and 33 fiber couplers[J]. Opt. Precision Eng.,2007,15(7):339-347. (in Chinese)
WANG Q J, ZHANG Y, SON Y C. All-Fiber 33 Interleaver design with flat-top passband[J]. IEEE Photon Technol. Lett., 2004,16(1):168-170.
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