相控阵光学
光学
波导管
相控阵
串扰
材料科学
硅光子学
硅
光束转向
光电子学
物理
梁(结构)
计算机科学
电信
天线(收音机)
作者
Xiaogen Yi,Hongxiang Zeng,Sai Gao,Ciyuan Qiu
出处
期刊:Optics Express
[The Optical Society]
日期:2020-11-30
卷期号:28 (25): 37505-37505
被引量:21
摘要
In this work, an ultra-compact low-crosstalk sinusoidal silicon waveguide array is proposed and analyzed. We first design a pair of low-crosstalk sinusoidal silicon waveguides with a pitch of 695 nm, where the sinusoidal bends are the key to reduce the crosstalk between waveguides. Then, based on this idea, we propose a low-crosstalk sinusoidal silicon waveguide array with a 695 nm pitch. The simulation results show that for an array length of 100 µm, the insertion loss is as low as 0.08 dB, and the crosstalk is lower than −26 dB at 1550 nm. The 695 nm pitch waveguide array also exhibits a favorable fabrication error tolerance when taking into account the waveguide width variations in practice. Moreover, within the acceptable range of crosstalk, the center-to-center distance between adjacent waveguides of this array can be further reduced to 615 nm. Since the pitch is related to the power consumption and beam-steering range of the optical phased array, our design provides an effective method to build the emitter for an energy-efficient optical phased array with a large field of view.
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