Multiple source frequency-modulated continuous-wave optical reflectometry: theory and experiment

被引：32
|
作者：
Vasilyev, Arseny [1 ]
Satyan, Naresh [2 ]
Xu, Shengbo [2 ]
Rakuljic, George [3 ]
Yariv, Amnon [1 ,2 ]
机构：
[1] CALTECH, Dept Appl Phys, Pasadena, CA 91125 USA
[2] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA
[3] Telaris Inc, Santa Monica, CA 90403 USA
来源：
APPLIED OPTICS | 2010年 / 49卷 / 10期
关键词：
LASER;
D O I：
10.1364/AO.49.001932
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose and demonstrate a novel approach to increase the effective bandwidth of a frequency-modulated continuous-wave (FMCW) ranging system. This is achieved by algorithmically stitching together the swept spectra of separate laser sources. The result is an improvement in the range resolution proportional to the increase in the swept-frequency range. An analysis of this system as well as the outline of the stitching algorithm are presented. Using three distinct swept-frequency optical waveforms, we experimentally demonstrate a threefold improvement in the range resolution of a three-sweep approach over the conventional FMCW method. (C) 2010 Optical Society of America
引用
收藏
页码：1932 / 1937
页数：6
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