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| 基于2×2和3×3耦合器的级联 马赫-曾德干涉仪型波长交错滤波器 | |
| 引用本文： | 鲁怀伟,张玉娥,罗冠炜.基于2×2和3×3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):1021-1025. |
| 作者姓名： | 鲁怀伟 张玉娥 罗冠炜 |
| 作者单位： | 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;兰州交通大学,数理与软件工程学院,甘肃,兰州,730070 2. 兰州交通大学资产与后勤管理处,甘肃,兰州,730070 3. 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 |
| 基金项目： | 国家自然科学基金 , 甘肃省教育厅研究生导师科研项目 , 兰州交通大学校科研和教改项目 |
| 摘 要： | 针对全光纤级联Mach-Zehnder干涉仪型(CMZI)波长交错滤波器在实际制作过程中存在的问题,提出了由一个2×2和两个3×3 单模光纤耦合器级联组成的全光纤CMZI型波长交错滤波器并进行了分析。分析结果表明:组成滤波器干涉臂的第二对臂长差为第一对臂长差的偶数倍时,耦合器分光比取一些定值可得到输出波形通带平坦、阻带加宽、透射率形态近似于方波的波长交错滤波器。与通常的CMZI相比,最大的优点是在实际制作时可以对每个耦合器的分光比进行准确的监测和控制,大大降低了CMZI型波长交错滤波器的制作困难。最后进行了实验研究,实验所得结果与理论结果相吻合。 |
| 关 键 词： | 应用光学 梳状滤波器 Mach-Zehnder干涉仪 波长交错滤波器 方向耦合器 |
| 文章编号： | 1004-924X(2007)07-1021-05 |
| 收稿时间： | 2006-08-18 |
| 修稿时间： | 2006年8月18日 |
Flat-top interleaver of cascaded M-Z interferometer with 2×2 and 3×3 fiber couplers |
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| LUO Guan-wei,ZHANG Yu-e,LUO Guang-wei.Flat-top interleaver of cascaded M-Z interferometer with 2×2 and 3×3 fiber couplers[J].Optics and Precision Engineering,2007,15(7):1021-1025. | |
| Authors: | LUO Guan-wei ZHANG Yu-e LUO Guang-wei |
| Affiliation: | 1. Key Laboratory of Opto-electronic Technology and Intelligent Control of the Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730070,China; 2. School of Mathematics, Physics &; Software Engineering, Lanzhou Jiaotong University, Lanzhou 730070,China; 3. Office of Assets and Rear Service Management, Lanzhou Jiaotong University, Lanzhou 730070,China |
| Abstract: | An all-fiber flat-top interleaver of Cascaded M-Z Interferometer (CMZI) using a 2×2 and two 3×3 fiber couplers with approximate rectangular wavelength response was developed.The relationships among the coupling ratios of the couplers, the length difference of interference arms, and the intensity transmission spectrum were analyzed. The results indicate that a uniform flat-top spectral response can be obtained by the configuration when the length difference of interference arms and the coupling coefficient of the couplers are some certain values and the passband and stopband of optical interleaver can be improved remarkably. Compared with conventional CMZI, the most advantage of the present method is that the coupling ratio of couplers can be controlled accurately. Finally,a novel structure of interleaver is fabricated using fused biconical taper technics in experiment. The experiment results agree with the analytical ones well. |
| Keywords: | applied optics comb filter Mach-Zehnder interferometer interleaver directional coupler |
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