Yurtsever Günay, Weiss Nicolás, Kalkman Jeroen, van Leeuwen Ton G, Baets Roel
Opt Lett. 2014 Sep 1;39(17):5228-31. doi: 10.1364/OL.39.005228.
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 0.75×5 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.
我们展示了一种用于扫频光学相干断层扫描（SS-OCT）的超紧凑型硅集成光子干涉仪。该集成干涉仪的占地面积仅为0.75×5平方毫米。该设计由三个2×2光分路器、一个物理长度为13厘米（光学长度为50.4厘米）的参考臂和光栅耦合器组成。该光子集成电路被用作SS-OCT系统的干涉仪。在向样品输送115微瓦功率的情况下，测得该系统的灵敏度为-62分贝。利用该系统，我们展示了分层组织模型的横截面OCT成像。我们还讨论了无源硅光子集成电路设计以及与有源组件集成方面的潜在改进。
