THERMO-OPTICAL EFFECT TYPE LIGHT DEFLECTING DEVICE AND THERMO-OPTICAL EFFECT TYPE DEFLECTING DEVICE MODULE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a light deflecting device which can increase the maximum deflection angle. ;SOLUTION: The thermo-optical effect type light deflecting device 21 is obtained by forming a plastic waveguide layer 24 having a diffraction grating 24a, a clad layer 23 made of plastics formed around the waveguide layer 24 and having a lower refractive index than that of the waveguide layer, and a heater 25, 26 to heat the waveguide layer 24. The deflection angle of the diffracted light is changed by changing the temperature of the waveguide layer 24 by the heater 25, 26.;COPYRIGHT: (C)2001,JPO