Performance Review of Multiple Reference Versus Time Domain Optical Coherence Tomography

IEEE Photonics Journal

Paul M. McNamara¹  Carol Wilson²  Josh Hogan²  Sean O'Gorman³  Martin J. Leahy³  Kai Neuhaus³  Sergey Alexandrov³ 

[1] Compact Imaging Ireland Ltd., Roselawn House, National Technology Park, Limerick, Ireland;Compact Imaging, Inc., Mountain View, CA, USA;Tissue Optics and Microcirculation Imaging facility, National University of Ireland, Galway, Ireland;

关键词: Heterodyne;    Heterodyning;    Coherent imaging;    Optical coherence tomography;    Biophotonics Instrumentation;    Coherent imaging;   

DOI  :  10.1109/JPHOT.2018.2828419

来源: DOAJ

【 摘 要 】

We present a detailed characterization of noise sources in multiple reference optical coherence tomography (MR-OCT) compared to time-domain OCT (TD-OCT). The noise characteristics were modeled based on the TD-OCT noise model and modified for MR-OCT and confirmed with measurements. The MR-OCT sensitivity characteristics are significantly affected by the reflection from the partial mirror, which also introduces a natural attenuation in the reference arm, partially matching the reflectivity intensity profile of human tissue. At optimal balance between sample and reference arm and using balanced detection, the peak sensitivity was measured to be 95 dB, which is close to simple Fourier-domain systems. The results provide a better understanding of the application range for MR-OCT and higher order effects observed, suggesting a nontrivial noise model for MR-OCT.

【 授权许可】

Unknown