Statistics of the depth-scan photocurrent in time-domain optical coherence tomography

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Sherif S Sherif (Author) Other; Carla C Rosa (Author) FCUP; Costel Flueraru (Author) Other; Shoude D Chang (Author) Other; Youxin X Mao (Author) Other; Adrian G Podoleanu (Author) Other

Journal

Title: Journal of the Optical Society of America A: Optics and Image Science, and Vision

Vol. 25

Pages: 16-20

ISSN: 1084-7529

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 7 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-004-3ZQ

DOI: 10.1364/josaa.25.000016

Abstract (EN): We derive the time-variant second-order statistics of the depth-scan photocurrent in time-domain optical coherence tomography (TD-OCT) systems using polarized thermal light sources and superluminescent diodes (SLDs). Since the asymptotic-joint-probability-distribution function (JPDF) of the photocurrent due to polarized thermal light is Gaussian and the signal-noise-ratio in TD-OCT is typically high (> 80 dB), the JPDF of the depth-scan photocurrent could be approximated as a Gaussian random process that is completely determined by its second-order statistics. We analyze both direct and differential light detection schemes and include the effect of electronic thermal fluctuations. Our results are a necessary prerequisite for future development of statistical image processing techniques for TD-OCT. (c) 2007 Optical Society of America.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5