Simultaneously measuring the refractive index and thickness of an optical sample by using improved fiber-based optical coherence tomography

Chih Ta Yen, Jen Fa Huang, Ming Jia Wu, Yu Fan Lee, Chia Tsai Huang, Shu Fan Huang, Hsu Chih Cheng

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An improved structure for the optical coherence tomography (OCT) scheme based on a 4 × 4 fiber coupler for simultaneously measuring the refractive index and thickness of optical samples is presented. The proposed structure incorporates the optical path length difference of interference light and is used to calculate the refractive index and thickness of an unknown sample without any prior knowledge of the sample parameters. Two methods (time-domain and Fourier-domain OCT) of obtaining information about an unknown sample are proposed, and a high-speed high-resolution OCT system was developed.

Original languageEnglish
Article number044108
JournalOptical Engineering
Volume53
Issue number4
DOIs
Publication statusPublished - 2014 Apr

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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