公开(公告)号：EP2929382A4

公开(公告)日：2016-06-08

申请号：EP14737546

申请日：2014-01-07

申请人： MASSACHUSETTS INST TECHNOLOGY

发明人： SUN JIE ,  WATTS MICHAEL R ,  YAACOBI AMI ,  TIMURDOGAN ERMAN

IPC分类号： G02F1/21 ,  G02B6/293

CPC分类号： G02F1/218 ,  G02B6/12033 ,  G02B6/26 ,  G02B6/29343 ,  G02B6/3546 ,  G02B6/3576 ,  G02F1/0147 ,  G02F1/2955

摘要： An optical phased array formed of a large number of nanophotonic antenna elements can be used to project complex images into the far field. These nanophotonic phased arrays, including the nanophotonic antenna elements and waveguides, can be formed on a single chip of silicon using complementary metal-oxide-semiconductor (CMOS) processes. Directional couplers evanescently couple light from the waveguides to the nanophotonic antenna elements, which emit the light as beams with phases and amplitudes selected so that the emitted beams interfere in the far field to produce the desired pattern. In some cases, each antenna in the phased array may be optically coupled to a corresponding variable delay line, such as a thermo-optically tuned waveguide or a liquid-filled cell, which can be used to vary the phase of the antenna's output (and the resulting far-field interference pattern).

摘要翻译： 可以使用由大量纳米光子天线元件形成的光学相控阵来将复杂图像投影到远场中。 这些纳米光子相控阵列，包括纳米光子学天线元件和波导，可以使用互补金属氧化物半导体（CMOS）工艺在单个芯片上形成。 定向耦合器ev逝地将来自波导的光耦合到纳米光子天线元件，其将光发射为具有相位和幅度的光束，使得发射的光束在远场中干涉以产生期望的图案。 在一些情况下，相控阵列中的每个天线可以光耦合到相应的可变延迟线，例如热光调谐波导或液体填充单元，其可用于改变天线输出的相位（和 产生的远场干扰图）。