| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Swept Frequency Measurement of Electrooptic Phase Modulators Using Dispersive Fibers |
| ZHANG Shang-Jian**, ZHANG Xiao-Xia, LIU Yong |
| State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Optoelectronic Information, University of Electronic Science & Technology of China, Chengdu 610054 |
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Abstract A novel method based on the use of dispersive fibers is proposed and experimentally demonstrated for measuring the high-frequency modulation index, as well as the half-wave voltage, of electro-optic phase modulators. Fiber dispersion causes the phase modulated signal to become intensity modulated, which allows for the high resolution swept frequency measurement of phase modulators, using a vector network analyzer. The proposed method holds without the restriction of small-signal approximation, which is applicable for the measurement at different driving levels and operating wavelengths.
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Received: 27 April 2012
Published: 31 July 2012
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| PACS: |
42.79.Hp
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(Optical processors, correlators, and modulators)
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42.82.Bq
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(Design and performance testing of integrated-optical systems)
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42.87.Bg
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(Phase shifting interferometry)
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