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Scientists at Columbia University have developed an on-chip, tunable photonic delay line to miniaturize imaging technology. Using their on-chip technology to map the back of the eye, the researchers produced high-contrast OCT images and extended the OCT imaging range by 0.6 mm while maintaining a high signal-to-noise ratio. Their work in this area could further the development of hand-held OCT devices for affordable deployment in low-resource settings.
Devices incorporating physical delay lines are used to provide long optical delays with broad bandwidth. Realizing long delay lines while maintaining a low loss and small footprint required the researchers to not only overcome the potential for losses caused by fabrication…READ MORE