| A 7-bit photonic true-time-delay system based on an 8 × 8 MOEMS optical switch |
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| 引用本文： | 杨莹,董毅,柳大伟,何浩,金耀辉,胡卫生.A 7-bit photonic true-time-delay system based on an 8 × 8 MOEMS optical switch[J].Chinese Optics Letters,2009,7(2):118-120. |
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| 作者姓名： | 杨莹 董毅 柳大伟 何浩 金耀辉 胡卫生 |
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| 作者单位： | School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240
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| 基金项目： | This work was supported by the Subsidized Project on Aerospace Technology Innovation Foundation of China Aerospace Science and Technology Corporation and the National Natural Science Foundation of China （No. 10778713 and 60736002）. |
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| 摘 要： | We demonstrate a 7-bit photonic true-time-delay （TTD） system which uses an 8 × 8 micro-optical-electro- mechanical system （MOEMS） optical switch for phased array antennas （PAAs） beamforming applications. The switch controls the optical signal to pass by the fiber delay lines （FDLs） of different lengths. Different time delays between adjacent channels are obtained due to the chromatic dispersion of FDLs. Therefore, the system cannot be disturbed by the environment. The measured time delay responses are nearly linear with the wavelength spacing between optical carriers as well as the lengths of FDLs, which agrees well with the theoretical analysis.
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| 关 键 词： | MOEMS 微光电子机械系统 TTD 光电子 应用 |
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