Advances in Optical Technologies

Research Article

A New Method for Airborne Sound Detection Using Total Internal Reflection and Its Application to Microphone

Figure 9

Waveforms of the output signal (p-polarized light).
547597.fig.009a
(a) 𝑓 0 = 1 1 0 k H z , L P F ∶ 1 5 0 k H z
547597.fig.009b
(b) 𝑓 0 = 2 0 0 k H z , L P F ∶ 2 4 0 k H z