Wide-field space division multiplexing optical coherence tomography for angiographic imaging of the human retina

We present a 4-channel multi-beam space division multiplexing optical coherence tomography (SDM-OCT) system for high-speed, wide-field angiographic imaging of the human retina. This system employs a swept-source laser at 1060 nm with a 200 kHz sweep rate, achieving an effective 800,000 A-scans per second. Our SDM-OCT setup, built with commercial optical components, integrates a customized stitching and flattening algorithm to enhance image quality. Preliminary tests on healthy volunteers demonstrate the system’s ability to produce high-resolution structural and angiographic OCT images, suggesting potential clinical application in ophthalmology.