Title :
Resolution improvement of optical coherence tomography with software spectral shaping
Author :
Lu, Chih-Wei ; Tsai, Meng-Tsan ; Wang, Yih-Ming ; Kiang, Yean-Woei ; Yang, C.C.
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We demonstrate dynamic spectral shaping 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 microns down to 7 microns, which is smaller than the theoretical limit of 8.9 microns if a Gaussian spectral shape is assumed, through the combined effect of dispersion compensation and spectral shaping.
Keywords :
biomedical optical imaging; image resolution; medical image processing; optical tomography; spectral line breadth; FWHM; Gaussian spectral shape; dispersion compensation; interference fringe; optical coherence tomography; resolution improvement; segmented spectral band; software signal processing; software spectral shaping; spectral full-width at half-maximum; Arm; Image segmentation; Interference; Light sources; Optical filters; Optical pulse shaping; Optical signal processing; Spatial filters; Spectral shape; Tomography;
Conference_Titel :
Biophotonics, 2004. APBP 2004. The Second Asian and Pacific Rim Symposium on
Print_ISBN :
0-7803-8676-0
DOI :
10.1109/APBP.2004.1412319
