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Authors: G. Yurtsever, Nicolas Weiss, Jeroen Kalkman, Ton G. van Leeuwen, R. Baets
Title: Ultra-compact silicon photonic integrated interferometer for swept-source optical coherence tomography
Format: International Journal
Publication date: 9/2014
Journal/Conference/Book: Optics Letters
Editor/Publisher: OSA, 
Volume(Issue): 39(17) p.5228-5231
DOI: 10.1364/ol.39.005228
Citations: 45 ( - last update: 14/7/2024)
39 (OpenCitations - last update: 27/6/2024)
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We demonstrate an ultra compact silicon integrated photonic interferometer for swept-source optical coherence tomography (SS OCT). The footprint of the integrated interferometer is only 0.75 x 5 mm2. The design consists of three 2x2 splitters, a 13 cm physical length (50.4 cm optical length) reference arm and grating couplers. The photonic integrated circuit was used as the interferometer of a SS OCT system. The sensitivity of the system was measured to be -62 dB with 115 µW power delivered to the sample. Using the system, we demonstrate cross-sectional OCT imaging of a layered tissue phantom. We also discuss potential improvements in passive silicon photonic integrated circuit design and integration with active components.

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