In this paper, we explore a simple and effective
fiber Bragg grating demodulation setup to detect ultrasound.
Different frequency ultrasound from hundreds
of kHz to several MHz were detected successfully. For the
first time, we combine ultrasound from a PZT transducer
with a photoacoustic imaging systemto obtain a clear photoacoustic
image of our pencil lead sample. With the advantage
of small size and all-optical features, this method
has the potential to be applied to medical endoscopic examination
in an electromagnetic environment. This preliminary
study suggests that the ultrasound detection with
fiber Bragg grating is both meaningful and feasible.