Spectrally sampled OCT imaging based on 1.7-μm continuous-wave supercontinuum source

Eun Joo Jung, Ju Han Lee, Byung Sup Rho, Myoung Jin Kim, Sung Hwan Hwang, Woo Jin Lee, Jae Jin Song, Myung Yung Jeong, Chang Seok Kim

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We demonstrate a novel multiwavelength light source around the 1.7-μm region based on continuous-wave (CW) supercontinuum (SC) generation for the deeper imaging of low-water-absorption sample with a spectrally sampled optical coherence tomography (OCT) system. This self-regulated Gaussian spectrum of CW SC source has an extremely smooth flat width with more than 210-nm full-width at half-maximum bandwidth centered at the 1.7-μm region, a high output power of 500 mW, and a low temporal instability with less than 0.1 dB for an hour. In order to improve the OCT signal sensitivity without increasing the optical illumination power, a multiwavelength light source based on this CW SC was implemented by using a tunable fiber Sagnac comb filter. When it was applied to the spectrally sampled OCT imaging, the multiwavelength light source enabled a dynamic range improvement, compared to conventional continuous spectral light source with the same average optical power.

Original languageEnglish
Article number6018983
Pages (from-to)1200-1208
Number of pages9
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number3
StatePublished - 2012


  • Continuous-wave (CW) supercontinuum (SC) source
  • Sagnac effect
  • fiber optics
  • optical coherence tomography (OCT)


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