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

fYear

2004

fDate

14-17 Dec. 2004

Firstpage

139

Lastpage

140

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Biophotonics, 2004. APBP 2004. The Second Asian and Pacific Rim Symposium on

Print_ISBN

0-7803-8676-0

Type

conf

DOI

10.1109/APBP.2004.1412319

Filename

1412319