Frequency-modulated continuous-wave lidar using I/Q modulator for simplified heterodyne detection

被引：95

作者：

Gao, S. ^{[1
,2
]}

Hui, R. ^{[1
]}

机构：

[1] Univ Kansas, Dept Elect Engn & Comp Sci, Lawrence, KS 66045 USA

[2] Univ Sci & Technol China, Dept Elect Engn & Informat Sci, Hefei 230027, Anhui, Peoples R China

来源：

OPTICS LETTERS | 2012年 / 37卷 / 11期

关键词：

WAKE VORTEX DETECTION; LASER-RADAR;

D O I：

10.1364/OL.37.002022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A frequency-modulated continuous-wave (FMCW) lidar is demonstrated with heterodyne detection. The lidar transmitter utilizes an electro-optic I/Q modulator for the first time to generate carrier-suppressed and frequency-shifted FM modulation. This eliminates the need for an acousto-optic frequency shifter commonly used in heterodyne lidar transmitters. It also allows the use of a much wider modulation bandwidth to improve the range resolution. The capability of complex optical field modulation of the I/Q modulator provides an additional degree of freedom compared with an intensity modulator, which will benefit future lidar applications. (C) 2012 Optical Society of America

引用

页码：2022 / 2024

页数：3

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