Phase-drift suppression using harmonics in heterodyne detection and its application to optical coherence tomography

被引：13

作者：

Sato, M

Seino, K

Onodera, K

Tanno, N

机构：

[1] Yamagata Univ, Grad Sch Sci & Engn, Grad Program Human Sensing & Funct Sensor Engn, Yonezawa, Yamagata 9928510, Japan

[2] Yamagata Technopolis Fdn, Reg Joint Res Project Yamagata Prefecture, Yamagata 9902473, Japan

来源：

OPTICS COMMUNICATIONS | 2000年 / 184卷 / 1-4期

关键词：

heterodyne beat signal; stabilization; harmonics; phase drift; optical coherence tomography;

D O I：

10.1016/S0030-4018(00)00930-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate phase-drift suppression (PDS) to enhance stabilization of the computed signal intensity (CSI) in heterodyne detection without optical and/or electronic feedback systems. CSI is defined as the square root of the sum of the squares of each harmonic intensity in the heterodyne beat signal. The PDS theoretically and experimentally demonstrates stabilizing conditions for modulation indexes and stability enhancements; for example, the CSI stability was enhanced 49 times through simulations and by 6.3 times through experiments for a modulation index of 2.62 rad. Optical coherence tomography images using a fiber Mach-Zehnder interferometer and a superluminescent diode verify the validity of PDS as an application. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 104

页数：10

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