A 32-channel CR-OCT system was developed to facilitate a data-efficient acquisition of three-dimensional imaging data in laparoscopy. The system consists of a frequency comb source, a high-power doped-fiber optical amplifier, an all fiber-based, 32-channel interferometer, a 32-beam MEMs-based forward-looking 2D laparoscopic probe, and 32-channel detection channels. A novel phase and polarization modulation circuit was included to allow complex and polarization-resolved fringe detection. The system operated at an effective A-line of 10 MHz. We demonstrate video-rate volumetric CR-OCT imaging of a patterned sample and polarization-sensitive imaging of ex vivo tissues.
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