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Multi-channel swept source optical coherence tomography concept based on photonic integrated circuits
- Source :
- Opt. Express 28, 32468-32482 (2020)
- Publication Year :
- 2020
-
Abstract
- In this paper, we present a novel concept for a multi-channel swept source optical coherence tomography (OCT) system based on photonic integrated circuits (PICs). At the core of this concept is a low-loss polarization dependent path routing approach allowing for lower excess loss compared to previously shown PIC-based OCT systems, facilitating a parallelization of measurement units. As a proof of concept for the low-loss path routing, a silicon nitride PIC-based single-channel swept source OCT system operating at 840 nm was implemented and used to acquire in-vivo tomograms of a human retina. The fabrication of the PIC was done via CMOS-compatible plasma-enhanced chemical vapor deposition to allow future monolithic co-integration with photodiodes and read-out electronics. A performance analysis using the results of the implemented photonic building blocks shows a potential tenfold increase of the acquisition speed for a multi-channel system compared to an ideal lossless single-channel system with the same signal-to-noise ratio.<br />Comment: 15 pages, 6 figures, 3 tables
- Subjects :
- Physics - Applied Physics
Physics - Optics
Subjects
Details
- Database :
- arXiv
- Journal :
- Opt. Express 28, 32468-32482 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.2011.14780
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1364/OE.404588