hase-reading detection method for signal processing in optical interferometric sensors is proposed and demonstrated. This method is based on a laser diode frequency modulated by a triangular waveform and time gating techniques. In our method, information on the optical phase can be extracted either from the beat frequency itself or the phase of the beat signal. The former would be used for displacement of the order of many wavelengths while the latter allows measurement in the subnanometer range. Detection of optical phase change as small as 2.0 $MUL 10$+$MIN@5$/rad/$ROOT@Hz with excellent linearity is demonstrated. Other useful applications of this technique are also briefly discussed.
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机译：提出和说明了光学干涉传感器中信号处理的HASE读取检测方法。该方法基于由三角波形和时间门控技术调制的激光二极管频率。在我们的方法中，可以从拍频本身或节拍信号的相位中提取有关光学相位的信息。前者将用于在后者允许在亚腔轮计范围内测量时的许多波长的顺序。检测光相变为2.0 $ MUL 10 $ + $ MIN @ 5 $ / RAD / $ root @ Hz具有出色的线性度。还简要讨论了该技术的其他有用应用。
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