Detection and evaluation of security features embedded in paper using spectral-domain optical coherence tomography

We propose a new method for authenticating valuable paper sheets such as gift coupons, tickets, and cheques with the use of optical coherence tomography (OCT). This method is based on the detection and evaluation of cross-sectional structural characteristics of valuable paper sheets provided with se...

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Bibliographic Details
Published inOptical review (Tokyo, Japan) Vol. 18; no. 1; pp. 171 - 175
Main Authors Fujiwara, Kazuo, Matoba, Osamu
Format Journal Article
LanguageEnglish
Published Japan Optical Society of Japan 01.01.2011
Subjects
Atomic
Lasers
Microwaves
Molecular
Optical and Plasma Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Quantum Optics
Regular Papers
RF and Optical Engineering
SD-OCT
optical coherence tomography
cross-sectional structural characteristic
security thread
valuable paper sheet
security feature
authentication
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Summary:We propose a new method for authenticating valuable paper sheets such as gift coupons, tickets, and cheques with the use of optical coherence tomography (OCT). This method is based on the detection and evaluation of cross-sectional structural characteristics of valuable paper sheets provided with security features. Commonly used as a security feature is a security thread, which is embedded in such paper sheets. In this paper, the nondestructive detection of the embedded security thread is demonstrated using spectral-domain OCT. The results showed that the security thread was clearly visualized in the OCT image despite the highly scattering nature of papers.
ISSN:1340-6000
1349-9432
DOI:10.1007/s10043-011-0018-y