Ultra-compact silicon photonic integrated interferometer for swept-source optical coherence tomography
2014; Optica Publishing Group; Volume: 39; Issue: 17 Linguagem: Inglês
10.1364/ol.39.005228
ISSN1539-4794
AutoresGünay Yurtsever, Nicolás Weiss, Jeroen Kalkman, Ton G. van Leeuwen, Roel Baets,
Tópico(s)Photoacoustic and Ultrasonic Imaging
ResumoWe demonstrate an ultra-compact silicon integrated photonic interferometer for swept-source optical coherence tomography (SS-OCT). The footprint of the integrated interferometer is only 0.75×5 mm2. The design consists of three 2×2 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 an 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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