Multi-channel acousto-optic modulation device and method

• Main Authors: ZHENG HUI, DENG JING, GE YAN, WU HONGCHUN, HUANG HAIZHOU, JIANG YOUSHAN, LIN WENXIONG
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• 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

The invention discloses a multichannel acousto-optic modulation device and a multichannel acousto-optic modulation method, and belongs to the field of laser technology application, the multichannel acousto-optic modulation device comprises a laser light source, a light splitting unit, a collimator and an optical fiber acousto-optic modulation system, and after entering the light splitting unit for light splitting, multiple paths of uniformly and equally divided light beams are output and are coupled to the respective optical fiber acousto-optic modulation systems through the collimators respectively. According to the device and the method, output light beams of each channel are large in interval and small in duty ratio, optical crosstalk is greatly reduced on the basis of realizing high-efficiency modulation of amplitude and phase of laser of each channel, and the device and the method have the characteristics of full-polarization light splitting, no additional phase difference and low polarization dependent