Linear OCT system with down conversion of the fringe pattern

Peter Koch; Gereon Hüttmann; Hansfrieder Schleiermacher; Jörg Eichholz; Edmund Koch

doi:10.1117/12.531323

Linear OCT system with down conversion of the fringe pattern

Peter Koch^*, Gereon Hüttmann, Hansfrieder Schleiermacher, Jörg Eichholz, Edmund Koch

^*Corresponding author for this work

Technische Universität Dresden

Abstract

OCT sensors traditionally use scanning optical delay lines with moving parts and a single detector. Compared to this OCT systems with a linear detector array (linear OCT or LOCT) are very simple and robust, but a detector with approximately 10 ⁴ pixel is needed for a imaging depth of 2 millimeter. We present a new system for LOCT which extends the measurement range of LOCT systems by attaching a mask on the image sensor. The mask essentially performs a down conversion of the spatial frequencies by multiplication with a second spatial frequency. We use this effect to reduce the fringe frequency of the OCT signal so that sampling and calculating the modulation of the signal can be done with relatively few pixels. The theory for this approach is addressed and first measurements are presented.

Original language	English
Title of host publication	Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII
Editors	Valery V. Tuchin, Joseph A. Izatt, James G. Fujimoto
Number of pages	8
Volume	5316
Publisher	SPIE
Publication date	01.07.2004
Pages	260-267
DOIs	https://doi.org/10.1117/12.531323
Publication status	Published - 01.07.2004
Event	Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII - San Jose, United States Duration: 26.01.2004 → 28.01.2004 Conference number: 63682

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Academic Focus: Biomedical Engineering

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Koch, P., Hüttmann, G., Schleiermacher, H., Eichholz, J., & Koch, E. (2004). Linear OCT system with down conversion of the fringe pattern. In V. V. Tuchin, J. A. Izatt, & J. G. Fujimoto (Eds.), Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII (Vol. 5316, pp. 260-267). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 5316). SPIE. https://doi.org/10.1117/12.531323

Koch, Peter ; Hüttmann, Gereon ; Schleiermacher, Hansfrieder et al. / Linear OCT system with down conversion of the fringe pattern. Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII. editor / Valery V. Tuchin ; Joseph A. Izatt ; James G. Fujimoto. Vol. 5316 SPIE, 2004. pp. 260-267 (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "Linear OCT system with down conversion of the fringe pattern",

abstract = "OCT sensors traditionally use scanning optical delay lines with moving parts and a single detector. Compared to this OCT systems with a linear detector array (linear OCT or LOCT) are very simple and robust, but a detector with approximately 10 4 pixel is needed for a imaging depth of 2 millimeter. We present a new system for LOCT which extends the measurement range of LOCT systems by attaching a mask on the image sensor. The mask essentially performs a down conversion of the spatial frequencies by multiplication with a second spatial frequency. We use this effect to reduce the fringe frequency of the OCT signal so that sampling and calculating the modulation of the signal can be done with relatively few pixels. The theory for this approach is addressed and first measurements are presented.",

author = "Peter Koch and Gereon H{\"u}ttmann and Hansfrieder Schleiermacher and J{\"o}rg Eichholz and Edmund Koch",

note = "Copyright: Copyright 2012 Elsevier B.V., All rights reserved.; Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII ; Conference date: 26-01-2004 Through 28-01-2004",

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Koch, P, Hüttmann, G, Schleiermacher, H, Eichholz, J & Koch, E 2004, Linear OCT system with down conversion of the fringe pattern. in V V. Tuchin, J A. Izatt & J G. Fujimoto (eds), Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII. vol. 5316, Proceedings of SPIE - The International Society for Optical Engineering, vol. 5316, SPIE, pp. 260-267, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII , San Jose, California, United States, 26.01.04. https://doi.org/10.1117/12.531323

Linear OCT system with down conversion of the fringe pattern. / Koch, Peter; Hüttmann, Gereon; Schleiermacher, Hansfrieder et al.
Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII. ed. / Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto. Vol. 5316 SPIE, 2004. p. 260-267 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 5316).

Research output: Chapters in Books/Reports/Conference Proceedings › Conference contribution › peer-review

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N2 - OCT sensors traditionally use scanning optical delay lines with moving parts and a single detector. Compared to this OCT systems with a linear detector array (linear OCT or LOCT) are very simple and robust, but a detector with approximately 10 4 pixel is needed for a imaging depth of 2 millimeter. We present a new system for LOCT which extends the measurement range of LOCT systems by attaching a mask on the image sensor. The mask essentially performs a down conversion of the spatial frequencies by multiplication with a second spatial frequency. We use this effect to reduce the fringe frequency of the OCT signal so that sampling and calculating the modulation of the signal can be done with relatively few pixels. The theory for this approach is addressed and first measurements are presented.

AB - OCT sensors traditionally use scanning optical delay lines with moving parts and a single detector. Compared to this OCT systems with a linear detector array (linear OCT or LOCT) are very simple and robust, but a detector with approximately 10 4 pixel is needed for a imaging depth of 2 millimeter. We present a new system for LOCT which extends the measurement range of LOCT systems by attaching a mask on the image sensor. The mask essentially performs a down conversion of the spatial frequencies by multiplication with a second spatial frequency. We use this effect to reduce the fringe frequency of the OCT signal so that sampling and calculating the modulation of the signal can be done with relatively few pixels. The theory for this approach is addressed and first measurements are presented.

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BT - Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII

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Koch P, Hüttmann G, Schleiermacher H, Eichholz J, Koch E. Linear OCT system with down conversion of the fringe pattern. In V. Tuchin V, A. Izatt J, G. Fujimoto J, editors, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VIII. Vol. 5316. SPIE. 2004. p. 260-267. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.531323

Linear OCT system with down conversion of the fringe pattern

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