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Single-body lensed photonic crystal fibers as side-viewing probes for optical imaging systems.

Authors
  • Choi, Hae Young1
  • Ryu, Seon Young
  • Na, Jihoon
  • Lee, Byeong Ha
  • Sohn, Ik-Bu
  • Noh, Young-Chul
  • Lee, Jongmin
  • 1 Department of Information and Communications, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, Gwangju 500-712, South Korea.
Type
Published Article
Journal
Optics letters
Publication Date
Jan 01, 2008
Volume
33
Issue
1
Pages
34–36
Identifiers
PMID: 18157249
Source
Medline
License
Unknown

Abstract

We report the fabrication and performance of a lensed photonic crystal fiber (PCF) designed as a compact but effective side-viewing optical imaging probe. The lensed-PCF probe was implemented in a single body without using any other fibers or additional optics. The beam expansion region and a focusing ball lens, necessary for a focuser, were simultaneously formed along a small piece of PCF by applying arc discharges. The side-viewing ability was provided by polishing the ball lens with a femtosecond laser to form a total internal reflection surface. The working distance and the transverse resolution of the fabricated single-body lensed-PCF were experimentally measured to be 570 and 6.8 microm, respectively. With the proposed lensed-PCF probe, optical coherence tomography images of an in vitro biological sample were successfully obtained.

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