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. Author manuscript; available in PMC: 2010 Mar 31.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Nov;56(11):2482–2491. doi: 10.1109/TUFFC.2009.1335

Fig. 1.

Fig. 1

Schematic of (a) a microring resonator, (b) its resonance spectrum, and (c) ultrasound detection using the optical resonance of a microring sensor: ultrasound pressure pulse causes dynamic shift of resonance wavelength, producing a modulated intensity in the form of a pulse in the light output.