Removing the depth-degeneracy in optical frequency domain imaging with frequency shifting | Zendy

Seok Hyun Yun | Zendy; G. J. Tearney | Zendy; Johannes F. de Boer | Zendy; Brett E. Bouma | Zendy

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Removing the depth-degeneracy in optical frequency domain imaging with frequency shifting

Author(s) -

Seok Hyun Yun,

G. J. Tearney,

Johannes F. de Boer,

Brett E. Bouma

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.004822

Subject(s) - optics , interferometry , frequency domain , ranging , laser , spatial frequency , wavelength , physics , computer science , telecommunications , computer vision

A novel technique using an acousto-optic frequency shifter in optical frequency domain imaging (OFDI) is presented. The frequency shift eliminates the ambiguity between positive and negative differential delays, effectively doubling the interferometric ranging depth while avoiding image cross-talk. A signal processing algorithm is demonstrated to accommodate nonlinearity in the tuning slope of the wavelength-swept OFDI laser source.

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