We present a novel low-coherence interferometer configuration, equipped in each arm with an adjustable optical path length ring. By compensating for the losses in the rings using semiconductor optical amplifiers, interference of low-coherence light after traversing the two rings 18 times is obtained. This configuration is employed to demonstrate simultaneous en face optical coherence tomography imaging at five different depths in a Drosophila melanogaster fly.
© 2010 Optical Society of America
Medical Optics and Biotechnology
Original Manuscript: April 16, 2010
Manuscript Accepted: May 31, 2010
Published: June 30, 2010
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics
Liviu Neagu, Adrian Bradu, Lisha Ma, James W. Bloor, and Adrian Gh. Podoleanu, "Multiple-depth en face optical coherence tomography using active recirculation loops," Opt. Lett. 35, 2296-2298 (2010)