US Patent No. 9,690,164

ACOUSTO-OPTIC CRYSTAL OPTICAL WAVEGUIDE AND ACOUSTIC WAVE SENSOR HAVING THE SAME


Patent No. 9,690,164
Issue Date June 27, 2017
Title Acousto-optic Crystal Optical Waveguide And Acoustic Wave Sensor Having The Same
Inventorship Jau-Sheng Wang, Kaohsiung (TW)
Yung-Hsin Tseng, Kaohsiung (TW)
Assignee NATIONAL SUN YAT-SEN UNIVERSITY, Kaohsiung (TW)

Claim of US Patent No. 9,690,164

1. An acousto-optic crystal optical waveguide used for transmitting a light beam includes:
an acousto-optic crystal core having an input terminal and an output terminal, wherein the light beam inputs into the input
terminal and outputs from the output terminal, and the light beam transmits through the acousto-optic crystal core in waveguide
propagation modes; and an inner cladding layer covering the acousto-optic crystal core, wherein the acousto-optic crystal
density of the acousto-optic crystal core produces periodic change to make refraction index of the acousto-optic crystal core
produce periodic change to form a grating that makes a light beam with specific wavelength unable to transmit through the
acousto-optic crystal core in waveguide propagation modes and refract to outside of the acousto-optic crystal optical waveguide
from the acousto-optic crystal core to change spectrum of the light beam transmitting through the acousto-optic crystal core
when the acousto-optic crystal optical waveguide is affected by a continuous acoustic wave.