多模光导纤维光学声探测 |
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引用本文: | 郑国星,冯天瑾.多模光导纤维光学声探测[J].山东海洋学院学报,1985,15(2):9-13. |
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作者姓名: | 郑国星 冯天瑾 |
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摘 要: | The phase modulation of a laser beam in single mode fiber by pre sure-induced refractive index variations produced by an acoustic wave propagating in a fluid has been studied in detail by many workers. This paper describes the phase modulation principle of a laser beam in multimode fiber by presure-induced refractive index variations produ ted by an acoustical wave,and it’s experimental results. The construction of producing the fixed phase difference and the modulation index in a multimode fiber is different from in a single mode fiber.But both results of sound detection are the same.
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关 键 词: | 水声学 多模光纤 声压作用 激光束相位调制 探测原理 |
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