https://scholars.lib.ntu.edu.tw/handle/123456789/317527
Title: | Resolution Improvement in Optical Coherence Tomography with Segmented Spectrum Management | Authors: | Lu, Chih-wei Tsai, Meng-tsan Wang, Yih-ming CHIH-CHUNG YANG YEAN-WOEI KIANG |
Keywords: | Biophotonics; Dispersion compensation; Optical coherence tomograph; Spectral shaping | Issue Date: | Dec-2005 | Journal Volume: | 37 | Journal Issue: | 13-15 | Start page/Pages: | 1165-1173 | Source: | Optical and Quantum Electronics | Abstract: | We demonstrate resolution improvement in an optical coherence tomography (OCT) system with multiple scans of segmented spectral bands and software signal processing. With an effective spectral full-width at half-maximum (FWHM) of 45 nm, centered at 950 nm, we compress the interference fringe FWHM from 31 μm down to 7 μm, which is smaller than the theoretical limit of 8.9 μm if a Gaussian spectral shape is assumed, through the combined effect of dispersion compensation and spectral shaping. With the amplitude adjustments of the OCT images of the segmented spectral bands, side-lobes can be significantly suppressed with a slight increase of the fringe envelope FWHM. With other amplitude adjustments, the envelope FWHM can be reduced to 5.6 μm at the expense of significant side-lobes. © Springer 2006. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/317527 https://www.scopus.com/inward/record.uri?eid=2-s2.0-31144466777&doi=10.1007%2fs11082-005-4188-3&partnerID=40&md5=30555bfc15f4d650f52a9bd6a2d19278 |
ISSN: | 03068919 | DOI: | 10.1007/s11082-005-4188-3 | SDG/Keyword: | Image segmentation; Optical systems; Signal processing; Tomography; Biophotonics; Dispersion compensation; Optical coherence tomography (OCT); Spectral bands; Spectral shaping; Optical resolving power |
Appears in Collections: | 電機工程學系 |
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