SPATIAL LIGHT MODULATOR AND SELECTIVE WAVELENGTH SWITCH

• Main Authors: HAN, Luo, XIANG, Hui, LI, Tenghao
• Format: Patent
• Language: Chinese; English; French
• Published: 24.02.2022
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A spatial light modulator (10) and a selective wavelength switch (100). The spatial light modulator (10) comprises a back plate (110) with a driving circuit (111) provided therein, a phase adjustment unit (20), electrodes (30), and an electric connection portion (40). The phase adjustment unit (20) comprises a lower cavity lens (21), a cavity layer (22) and an upper cavity lens (23), the lower cavity lens (21) being located between the cavity layer (22) and the back plate (110). The electrodes (30) include a first electrode (31) and a second electrode (32), and the electrodes (30) are located inside or on the surface of the phase adjustment unit (20), and are located on one side of the lower cavity lens (21) away from the back plate (110). The electric connection portion (40) electrically connects the electrodes (30) and the driving circuit (111) to form a driving electric field between the first electrode (31) and the second electrode (32) in order to adjust the refractive index of the phase adjustment unit