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发明公开
CN105356945A 一种外差式光纤水听器系统 无效 - 驳回

一种外差式光纤水听器系统
摘要：
本发明涉及一种外差式光纤水听器系统，其解决了现有光纤水听器系统中信号探测端的信号强度及信噪比差异性较大，存在不均衡性的技术问题，其包括多波长单频光源、波分复用器、脉冲调制单元、第一放大器、传感阵列、第二放大器、解复用器和功率均衡单元，多波长单频光源的输出端与所述波分复用器的输入端连接，波分复用器的输出端与脉冲调制单元的输入端连接，脉冲调制单元的输出端通过第一放大器与传感阵列的输入端连接，传感阵列的输出端通过第二放大器与解复用器的输入端连接，解复用器的输出端与功率均衡单元连接。本发明广泛用于光纤传感及水声信号测量领域。
摘要（英）：

The invention relates to a heterodyne optical fiber hydrophone system, and solves the technical problem that in an existing optical fiber hydrophone system signal intensity and the signal-to-noise ratios of a signal detecting end have large difference and thus unbalance exists. The heterodyne optical fiber hydrophone system includes a multi-wavelength single-frequency light source, a wavelength division multiplexer, a pulse modulation unit, a first amplifier, a sensor array, a second amplifier, a demultiplexer and a power equalization unit, an output end of the multi-wavelength single-frequency light source is connected with an input end of the wavelength division multiplexer, an output end of the wavelength division multiplexer is connected with an input end of the pulse modulation unit, an output end of the pulse modulation unit is connected with an input end of the sensor array through the first amplifier, an output end of the sensor array is connected with an input end of the demultiplexer through the second amplifier, and an output end of the demultiplexer is connected with the power equalization unit. The heterodyne optical fiber hydrophone system provided by the invention is widely used for the field of optical fiber sensing and underwater sound signal measurement.

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