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单模光纤水听器声压灵敏度的研究
INVESTIGATION ON THE ACOUSTONOTIVE PRESSURE SENSITIVETY OF A SINGLE MODE FIBER HYDROPHONE
【摘要】 光纤水听器是一种新型的声信号探测器。声压灵敏度是它的重要技术指标。70年代末,Peter和Price等人提出了声光转换的理论模型,Price导出了单模光纤水听器的声压灵敏度公式。本文,根据弹性振动理论和光弹理论,对Price公式加以推广,导出了宽频带中适用的新的声压灵敏度公式,并指出Price公式只是新得出的公式在低频声信号下的表达式。
【Abstract】 A optical fiber hydrophone is a new kind of acoustic signal detector.The acoustomotivepressure sensitivity is its important technical target.By the end of the 1970’s,Peter and Price,et alhad proposed the theoretical mOdel of acousto-optics conversion and Price had derived the formula ofacoustomotive pressure sensitivity of a single mode fiber hydrophone. Inthis paper,based on the elastic vibration theory and the photoelastic theory,a new formula of acoustomotive pressure sensitivity isderived which canbe used in a broadband.It is pointed out that Price’s formula is the same as the newformula when the acoustic signal frequency is low,thus extending Price,s formula.
【Key words】 Single mode fiber; Hydrophone; Acoustomotive pressure sensitivity; Stress-optics tensor; Light loss; Phase;
- 【文献出处】 光子学报 ,ACTA PHOTONICA SINECA , 编辑部邮箱 ,1995年01期
- 【分类号】TB565.1
- 【被引频次】12
- 【下载频次】219