| 布拉格光栅辅助型上下话路滤波器的实验制作 |
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| 引用本文： | 范林勇. 布拉格光栅辅助型上下话路滤波器的实验制作[J]. 上海电力学院学报, 2010, 0(4) |
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| 作者姓名： | 范林勇 |
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| 作者单位： | 北京交通大学光波技术研究所;全光网络与现代通信网教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(60771008); 北京市自然科学基金资助项目(4082024); 教育部博士点基金资助项目(200800040002) |
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| 摘 要： | 采用波长为248nm的紫外光,在由标准单模光纤和自制的高掺锗光敏光纤熔融拉锥制作的2×2光纤失配耦合器上写入光纤光栅,实现了全光纤布拉格光栅(FBG)辅助失配耦合器型上下话路滤波器,并测试了器件的传输特性,器件的插入损耗和回波损耗分别为6.74dB和-18.84dB。用10Gbps的光信号进行了传输实验,分别测试了下话路前、后信号的眼图。与输入信号相比,下话路信号的信噪比从10.04dB降低到了9.27dB,信号的消光比从8.89dB降低到了4.68dB。
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| 关 键 词： | 上下话路滤波器 光纤布拉格光栅(FBG) 耦合器 眼图 光纤通信 |
Experimental fabrication of add/drop filters using a Bragg grating-assisted mismatched coupler |
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| FAN Lin-yong. Experimental fabrication of add/drop filters using a Bragg grating-assisted mismatched coupler[J]. Journal of Shanghai University of Electric Power, 2010, 0(4) |
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| Authors: | FAN Lin-yong |
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| Affiliation: | Institute of Lightwave Technology,Beijing Jiaotong University,Key Lab.of All-optical Network & Advanced Telecommunication Network of EMC,Beijing 100044,China, |
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| Abstract: | All-fiber add/drop filter is a key component in the optical fiber communication system.Add/drop filters using a Bragg grating-assisted mismatched coupler were fabricated and tested in the laboratory.The filter was based on 248 nm ultraviolet-written Bragg grating in 2×2 coupler fused with a standard single mode fiber and a high germanium doped photosensitive fiber fabricated by our own laboratory.The insertion loss and the return loss of the device were 6.74 dB and -18.84 dB,respectively.The per... |
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| Keywords: | add/drop filter fiber Bragg grating coupler eye diagram optical communication |
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