Fig. 1. Diagram of ultrasonic device and structure of acousto-optic switch: (a) Schematic diagram of ultrasonic generator; (b) structure of acousto-optic switch and ultrasonic waveform.

Fig. 2. Reflection spectrum and electric field distribution of DBR and OTS: (a) Band gap of DBR reflection spectrum and OTS reflection spectrum; (b) electric field distribution at 1550 nm.

Fig. 3. Relation diagram between ultrasonic amplitude and OTS intrinsic wavelength.

Fig. 4. Reflection spectrum and electric field diagram of ultrasonic wave with amplitude of 0.4 nm and without ultrasonic wave: (a) The reflection spectrum of the acousto-optic switch with 0.4 nm amplitude applied and without ultrasonic; (b) electric field diagram at 1538 nm without ultrasonic; (c) electric field diagram at 1538 nm with amplitude of 0.4 nm ultrasonic wave.

Fig. 5. Relationship between the wavelength of acousto-optic switch and extinction ratio.

Fig. 6. Relationship between the wavelength of acousto-optic switch and insert loss.

Fig. 7. Relationship between response time of acousto-optic switch and wavelength of incident light.