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1. 兰州交通大学 光电技术与智能控制教育部重点实验室,甘肃 兰州 730070
2. 兰州交通大学 数理与软件工程学院,甘肃 兰州 730070
收稿日期:2005-10-14,
修回日期:2006-01-04,
网络出版日期:2006-04-30,
纸质出版日期:2006-04-30
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鲁怀伟, 章宝歌, 李敏芝, 等. 基于双耦合器的平坦型全光纤波长交错滤波器[J]. 光学精密工程, 2006,14(2):145-150.
LU Huai-wei, ZHANG Bao-ge, LI Min-zhi, et al. All-fiber flat-top interleaver based on double single mode couplers[J]. Optics and precision engineering, 2006, 14(2): 145-150.
提出了由一个3×3 单模光纤耦合器和一个2×2单模光纤耦合器级联组成的波长交错滤波器
给出了其基本结构形式。将3×3耦合器中的两边两个输出端口连接在一起
中间端口为反射回路
形成一个3阶级联反射式Mach-Zehnder干涉仪
利用傅里叶级数展开的方法对其输出特性进行了分析。分析结果表明:组成滤波器的两个耦合器分光比和干涉臂的臂长差取一些定值时
可得到输出波形通带平坦的波长交错滤波器
其输出稳定性和隔离度均得到了提高。与通常的3阶级联Mach-Zehnder干涉仪相比
耦合器数目减少
在实际制作时可以对耦合器的分光比和干涉臂臂长差进行准确监测和控制。
The transmission function of a interleaver consisting of a 2×2 and 3×3 single mode fiber coupler in series was analyzed. Based on the Fourier series digital approximation method
the relationship among the splitting ratios of the couplers
the length difference of interference arms and intensity transmission spectrum was discussed. The results indicate that this configuration can achieve an approximate rectangular wavelength response when the length difference of interference arms and coupling coefficients of the couplers are given by a certain value in order
its stability and isolation is improved greatly. An advantage of this interleaver is that the coupling ratio of coupler and the proportion of the length differences can be controlled accurately because light interference effect can be sheered away in fabricating. A novel structure of interleaver is fabricated with fused biconical taper technics in experiment. The experiment results are in good agreement with the theoretical analysis.
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. 瞿荣辉,赵 浩,方祖捷. 级联非平衡Mach-Zehnder干涉仪型复用器特性分析[J]. 光电子·激光,2001, 12(3):254-257. ZHAI R H,ZHAO H, FANG Z J. Analysis of optical multiplexer/demultiplexer based on cascaded non-balanced Mach-Zehnder interferometer[J]. Journal of Optoelectronics·Laser, 2001, 12(3):254-257.
. 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].Optics and Precision Engineering, 2005, 13(3): 339-347. (in Chinese)
. 何娜, 吴重庆,卫炎, 等. 熔锥平行排列3 ×3单模光纤耦合器的研究[J]. 中国激光, 2004, 31(3):323-327. HE N, WU C Q, WEI Y, et al. Fused planar 3×3 single mode fiber coupler . Chinese Journal of Lasers, 2004, 31(3):323-327. (in Chinese)
. 姚寿铨, 陈凯旋. 光纤马赫-陈德尔干涉型8波分超窄波分复用器的研制[J]. 光学学报, 1998, 18(8):1114-1118. YAO S Q, CHEN K X. A 8-Channel fiber Mach-Zehnder interferometric super narrow spacing wavelength-division-multiplexer [J]. Acta Optica Sinica, 1998, 18(8):1114-1118. (in Chinese)
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