Transmitter array

In the light emitter device, when the point emitters are placed on the focal plane of the lens system, each point emitter will point to a specific free space angle according to the position of the point emitter relative to the longitudinal central axis of the lens system. The plurality of point emitters are arranged in an array including a plurality of rows of point emitters and a plurality of columns of point emitters. Each of the plurality of point emitters includes a grating coupler configured to emit a respective light beam in a respective transmission direction. Each grating coupler includes a plurality of periodically spaced first optical waveguide grating structures, at least some of the optical waveguide grating structures including notches, whereby a first portion of each optical waveguide grating structure extends a different height than a second portion. 在光发射器装置中，当将点发射器放置在透镜系统的焦平面上时，根据点发射器相对于透镜系统的纵向中心轴的位置，各个点发射器将指向特定自由空间角度。多个点发射器布置在包括多行点发射器和多列点发射器的阵列中。多个点发射器中的每个包括光栅耦合器，其被配置成在各自传输方向上发射各自光束。各光栅耦合器包括：