| 摘要 |
PURPOSE:To reduce the size and power consumption of the light wavelength selector by arranging a movable plate and a plane plate adjacently almost in parallel, using an insulator layer as a base, and providing a light deflection part where one end of the movable plate is supported on the plane plate and a diffraction grating where the projection light of the light deflection part is made incident. CONSTITUTION:When a voltage is applied between the movable plate 10 and plane plate 11, an electrostatic force operates between them and the movable plate 10 is displaced. By this displacement, the movable plate 10 reflects wavelength multiplex light in a different direction from that when no voltage is applied. Then a light signal having different single wavelength according to the displacement of the movable plate 10 is made incident on an output port part 9. For the purpose, a power source 13 controls the applied voltage to vary the quantity of displacement of the movable plate 10 and thus the incidence/projection conditions of the diffraction grating 8 are changed to control the wavelength of the light signal which is made incident on the output port part 9. Consequently, the size is reducible and the power consumption is made low. |
