| 低损耗、高消光比的Z切钛扩散铌酸锂调制器 |
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| 引用本文： | 张阜文,陈福深,邱昆,薛飞.低损耗、高消光比的Z切钛扩散铌酸锂调制器[J].光电工程,2004,31(4):24-27. |
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| 作者姓名： | 张阜文 陈福深 邱昆 薛飞 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信系统技术重点实验室,四川,成都,610054 |
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| 基金项目： | 国家自然科学基金项目(60077030) |
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| 摘 要： | 为了获得低损耗、高消光比的光波导电光调制器,以钛扩散铌酸锂( Ti: LiNbO3 )波导折射率的分布和光波导的优化设计为基础,利用有限差分光束传播法( FD-BPM )和点匹配法,从理论上给出了一种光损耗为-0.53dB、消光比为30dB的Z切钛扩散铌酸锂调制器。并且,在10Gbit/s的系统中对其进行了测试,取得了在120 km长的光纤上传输无误码的效果和较清晰的眼图。
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| 关 键 词： | 光电调制器 消光比 光损耗 |
A Z-cut Ti :LiNbO3 Mach-Zehnder modulator with low loss and high extinction ratio |
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| Abstract.A Z-cut Ti :LiNbO3 Mach-Zehnder modulator with low loss and high extinction ratio[J].Opto-Electronic Engineering,2004,31(4):24-27. |
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| Authors: | Abstract |
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| Abstract: | In order to obtain optical waveguide modulator with low loss and high extinction ratio, based on the refraction index distribution of a Ti : LiNbO3 waveguide and optimization design of the optical waveguide, a Z-cut Ti : LiNbO3 modulator with -0.53dB optical loss and 30dB extinction ratio is given theoretically by using finite-difference beam propagation method (FD-BPM) and point-matching method. A test has been carried out in a 10Gbit/s system. A clear eye diagram without error code can be transmitted in an optical fiber 120 km long. |
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| Keywords: | Photoelectric modulator Extinction ratio light loss |
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