Polarization-based balanced detection for spectral-domain optical coherence tomography

Adam J. Black, Taner Akkin

Research output: Contribution to journalArticlepeer-review


We present a new design for spectral-domain optical coherence tomography that allows balanced detection using a single camera. The design uses polarization optics to encode the light in reference and sample arms. Two parallel and highly aligned spectra, which carry out-of-phase interference signals, in-phase common noise, and autointerference terms, are focused on the camera, which performs the digital balanced detection for each wavelength. The optical system is characterized and tested for tissue imaging. Results demonstrate consistent signal gains in depth and suppression of DC and sample auto-interference. The design could be further amended for polarization-sensitive imaging and might demonstrate a market for manufacturing dual-line cameras with analog-balanced detection capability.

Original languageEnglish (US)
Pages (from-to)7252-7257
Number of pages6
JournalApplied Optics
Issue number24
StatePublished - Aug 20 2015

Bibliographical note

Publisher Copyright:
© 2015 Optical Society of America.


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