TR2020-156
Spectrally sparse optical coherence tomography
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- , "Spectrally sparse optical coherence tomography", Optics Express, DOI: 10.1364/OE.409539, Vol. 28, No. 25, pp. 37798-37810, October 2020.BibTeX TR2020-156 PDF
- @article{Atalar2020oct,
- author = {Atalar, Okan and Millar, David S. and Wang, Pu and Koike-Akino, Toshiaki and Kojima, Keisuke and Orlik, Philip V. and Parsons, Kieran},
- title = {Spectrally sparse optical coherence tomography},
- journal = {Optics Express},
- year = 2020,
- volume = 28,
- number = 25,
- pages = {37798--37810},
- month = oct,
- doi = {10.1364/OE.409539},
- url = {https://www.merl.com/publications/TR2020-156}
- }
- , "Spectrally sparse optical coherence tomography", Optics Express, DOI: 10.1364/OE.409539, Vol. 28, No. 25, pp. 37798-37810, October 2020.
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MERL Contacts:
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Research Areas:
Computational Sensing, Electronic and Photonic Devices, Optimization, Signal Processing
Abstract:
Swept-source optical coherence tomography (OCT) typically relies on expensive and complex swept-source lasers, the cost of which currently limits the suitability of OCT for new applications. In this work, we demonstrate spectrally sparse OCT utilizing randomly spaced low-bandwidth optical chirps, suitable for low-cost implementation with telecommunications grade devices. Micron scale distance estimation accuracy with a resolution of 40 Um at a standoff imaging distance greater than 10 cm is demonstrated using a stepped chirp approach with approximately 23% occupancy of 4 THz bandwidth. For imaging of sparse scenes, comparable performance to full bandwidth occupancy is verified for metallic targets.