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

View/ Open
Issue Date
2012-05-30Author
Gao, Shuang
Hui, Rongqing
Publisher
Optical Society of America
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
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.
Description
This is the published version. © Copyright 2012 Optical Society of America
Collections
Citation
Gao, S., and R. Hui. "Frequency-modulated Continuous-wave Lidar Using I/Q Modulator for Simplified Heterodyne Detection." Optics Letters Opt. Lett. 37.11 (2012): 2022. http://dx.doi.org/10.1364/OL.37.002022
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.