Analyses and calculations of noise in optical coherence tomography systems

doi:10.1007/s12200-008-0034-0

Front Optoelec Chin

2008, Vol. 1

Issue (3-4) : 247-257 https://doi.org/10.1007/s12200-008-0034-0

Research Article

Analyses and calculations of noise in optical coherence tomography systems

Xiaonong ZHU¹(

), Yanmei LIANG¹, Youxin MAO², Yaqing JIA¹, Yiheng LIU¹, Guoguang MU¹

1. Institute of Modern Optics, Nankai University, Key Laboratory of Opto-electronic Information Science and Technology, Ministry of Education; 2. Institute for Microstructural Science, National Research Council Canada

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Abstract

Significant progress has been made in the study of optical coherence tomography (OCT) - a non-invasive, high resolution, and in vivo diagnostic method for medical imaging applications. In this paper, the principles of noise analyses for OCT systems have been described. Comparisons are made of signal-to-noise ratios for both balanced and unbalanced detection schemes under the ideal no-stray light situation as well as the non-ideal situation where residual reflections and scatterings are presented. Numerical examples of noise calculation accompanied by detailed comparison of the main characteristics of both time-domain and frequency-domain OCT systems are also presented. It is shown that a larger dynamic range can be achieved for a Fourier-domain OCT system even under the circumstances of high-speed image acquisition. The main results presented in this paper should be useful for the development of high performance OCT systems.

Keywords optical coherence tomography (OCT) noise analyses sensitivity signal-to-noise ratio (SNR)

Corresponding Author(s): ZHU Xiaonong,Email:xnzhu1@nankai.edu.cn

Issue Date: 05 September 2009

Cite this article:

Xiaonong ZHU,Yanmei LIANG,Youxin MAO, et al. Analyses and calculations of noise in optical coherence tomography systems[J]. Front Optoelec Chin, 2008, 1(3-4): 247-257.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-008-0034-0
https://academic.hep.com.cn/foe/EN/Y2008/V1/I3-4/247

Fig0 Schematics of optical layouts.(a) Time-domain OCT systems; (b) frequency-domain OCT systems

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