Hybrid vibration sensor with conversion of a piezoelectric signal into modulation of optical radiation and its transmission through optical fiber

Ветров А.А., Сергушичев А.Н. Гибридный вибродатчик с преобразованием пьезоэлектрического сигнала в модуляцию оптического излучения и передачей его по оптоволокну // Оптический журнал. 2019. Т. 86. № 12. С. 53–58. http://doi.org/10.17586/1023-5086-2019-86-12-53-58

Vetrov A.A., Sergushichev A.N. Hybrid vibration sensor with conversion of a piezoelectric signal into modulation of optical radiation and its transmission through optical fiber [in Russian] // Opticheskii Zhurnal. 2019. V. 86. № 12. P. 53–58. http://doi.org/10.17586/1023-5086-2019-86-12-53-58  

A. A. Vetrov and A. N. Sergushichev, "Hybrid vibration sensor with conversion of a piezoelectric signal into modulation of optical radiation and its transmission through optical fiber," Journal of Optical Technology. 86(12), 789-793 (2019). https://doi.org/10.1364/JOT.86.000789

In this study, a hybrid vibration sensor is proposed and investigated, in which an electric signal from a primary piezoelectric vibration transducer is used to modulate optical radiation using an electro-optic modulator. The modulator is made using integrated-optics technology based on the Mach–Zehnder layout of a reflective type with combined input/output to an optical fiber with conservation of polarization. The measured threshold vibration sensitivity of the sensor was approximately 10−5m/s210⁻⁵m/s² in the acoustic frequency range.

The authors express deep gratitude to Alexander Shamra˘ı (AF Ioffe Institute of Physics and Technology) for his invaluable assistance in the fabrication of the specialized reflective integrated-optics modulator.