双光栅耦合器型上下话路滤波器的设计和实验

董小伟; 许鸥; 鲁韶华; 冯素春; 裴丽; 简水生

中国激光, 2007, 34 (8): 1106, 网络出版: 2007-09-05

双光栅耦合器型上下话路滤波器的设计和实验

Design and Experiment of Add/Drop Filter Based on Double-Fiber-Bragg-Gratings Coupler

论文大纲

董小伟 ^*许鸥鲁韶华冯素春裴丽简水生

作者单位

全光网与现代通信网教育部重点实验室, 北京交通大学光波技术研究所, 北京 100044

光通信上下话路滤波器光纤耦合器光纤布拉格光栅熔融拉锥 optical communication add/drop filter fiber coupler fiber Bragg grating fused taper

摘要

利用两布拉格光栅反射作用的联合效应形成的双光栅耦合器,具有结构紧凑、滤波效率显著加强的优点。通过详细分析光栅写入特性对器件性能的影响,指出优化光栅在耦合区中的位置,不仅可以使得满足布拉格匹配条件的信号最大效率地下话路输出,还能有效消除背向回波干扰。在此基础上,调节光栅写入长度和紫外折射率调制强度,设计制作出一种结构平衡、上下话路滤波响应同时改善的新型双光栅耦合器。并且在实验中发现,耦合区的非均匀是造成下话路响应平坦性恶化的主要因素,为改进熔融拉锥工艺、进一步提高双光栅耦合器的滤波性能提供了依据。

Abstract

Double-grating coupler based on two fiber-Bragg-gratings (FBGs) has the advantages of compact structure and enhanced filtering efficiency. The influences of gratings′ characteristics were investigated thoroughly, and the result showed that maximum drop efficiency and minimum backreflected return wave could be achieved by choosing proper gratings′ position in the coupler region. Furthermore, by adjusting the gratings′ length and ultraviolet (UV) refractive modulation depth, a novel balanced configuration with the two Bragg gratings inscribed into the coupler waist′s center was designed and fabricated, which showed simultaneously optimized add and drop filtering responses. The experimental measurement demonstrated that the uniformity of coupler waist should be responsible for the inequality in drop bandpass, and the filtering performance of double-gratings coupler can be enhanced by improving fused taper technique.

参考文献

[1] . A novel wavelength-division multiplexer using grating-assisted two-mode interference[J]. IEEE Photon. Technol. Lett., 2004, 16(10): 2251-2253.

[2] Zhongwei Tan, Yan Liu, Yong Chen et al.. 8×10 Gb/s transmission system over 1500 km on G.652 fiber dispersion compensated by chirped fiber gratings [J]. Chin. Opt. Lett., 2005, 3(8):441～443

[3] Yun Binfeng Chen Na, Cui Yiping. Refractive index sensing characteristics of fiber Bragg grating based on cladding mode [J]. Acta Optica Sinica, 2006, 26(7):1013～1015
恽斌峰,陈娜,崔一平. 基于包层模的光纤布拉格光栅折射率传感特性[J]. 光学学报, 2006, 26(7):1013～1015

[4] . Optimized grating-frustrated coupler[J]. Opt. Lett., 2001, 26(17): 1329-1331.

[5] . Dong, P. Hua, T. A. Birks et al.. Novel add/drop filters for wavelength-division-multiplexing optical fiber systems using a Bragg grating assisted mismatched coupler[J]. IEEE Photon. Technol. Lett., 1996, 8(12): 1656-1658.

[6] Dong Xiaowei, Pei Li, Jian Shuisheng. Narrow bandwidth add-drop channel filter based on fiber-Bragg-grating-coupler [J]. Chinese J. Lasers, 2006, 33(5):621～625
董小伟,裴丽,简水生. 光纤布拉格光栅耦合器型窄带上下话路滤波器的数值分析[J]. 中国激光, 2006, 33(5):621～625

[7] . Add/drop channel filter based on fiber-Bragg-grating-assisted coupler fabricated by asymmetric fused taper technology[J]. Acta Physica Sinica, 2006, 55(9): 4739-4743.

[8] Luo Aiping, Emmanuel Marin, Jean-Pierre Meunier et al.. All-fiber wavelength selective filter based on UV-written Bragg grating in conventional fused coupler [J]. Chinese J. Lasers, 2004, 31(12):1491～1494
罗爱平,Emmanuel Marin, Jean-Pierre Meunier 等. 光纤耦合器上写入光栅制作滤波器的实验研究[J]. 中国激光, 2004, 31(12):1491～1494

[9] . . Transfer matrix method analysis of apodized grating couplers[J]. Opt. Commun, 2004, 235: 319-324.

[10] . Optimum design and performance evaluation of an all-fiber add-drop multiplexer based on a grating coupler[J]. IEEE J. Sel. Top. Quantum Electron., 1999, 5(5): 1392-1399.

[11] . . Fused biconical taper all-wave coupler[J]. Acta Physica Sinica, 2003, 52(2): 390-394.

董小伟, 许鸥, 鲁韶华, 冯素春, 裴丽, 简水生. 双光栅耦合器型上下话路滤波器的设计和实验[J]. 中国激光, 2007, 34(8): 1106. 董小伟, 许鸥, 鲁韶华, 冯素春, 裴丽, 简水生. Design and Experiment of Add/Drop Filter Based on Double-Fiber-Bragg-Gratings Coupler[J]. Chinese Journal of Lasers, 2007, 34(8): 1106.

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