Chip based common-path optical coherence tomography system with an on-chip microlens and multi-reference suppresion algorithm
| Autor: | Johannes S. Kanger, René M. de Ridder, Nicolás Weiss, Vinod Subramaniam, Kerstin Worhoff, Markus Pollnau, Ton G. van Leeuwen, Lantian Chang |
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| Přispěvatelé: | Nanobiophysics, Biomedical Photonic Imaging, Other Research, Biomedical Engineering and Physics, ACS - Amsterdam Cardiovascular Sciences, CCA -Cancer Center Amsterdam, Translational Physiology, Executive board Vrije Universiteit |
| Rok vydání: | 2016 |
| Předmět: |
Physics::Optics
02 engineering and technology Ghost imaging 01 natural sciences 010309 optics 020210 optoelectronics & photonics Optics Optical coherence tomography 0103 physical sciences 0202 electrical engineering electronic engineering information engineering medicine Journal Article SDG 7 - Affordable and Clean Energy Physics Microlens medicine.diagnostic_test business.industry Bandwidth (signal processing) Detector Chip Atomic and Molecular Physics and Optics Wavelength IR-100564 Optoelectronics Power dividers and directional couplers business METIS-316747 |
| Zdroj: | Optics express, 24(12):12635. The Optical Society Chang, L, Weiss, N, van Leeuwen, T G, Pollnau, M, de Ridder, R M, Wörhoff, K, Subramaniam, V & Kanger, J S 2016, ' Chip based common-path optical coherence tomography system with an on-chip microlens and multi-reference suppression algorithm ', Optics Express, vol. 24, no. 12, pp. 12635-50 . https://doi.org/10.1364/OE.24.012635 Optics express, 24(12), 12635-12650. The Optical Society Optics Express, 24(12), 12635-50. The Optical Society |
| ISSN: | 1094-4087 |
| Popis: | We demonstrate an integrated optical probe including an on-chip microlens for a common-path swept-source optical coherence tomography system. This common-path design uses the end facet of the silicon oxynitride waveguide as the reference plane, thus eliminating the need of a space-consuming and dispersive on-chip loop reference arm, thereby obviating the need for dispersion compensation. The on-chip micro-ball lens eliminates the need of external optical elements for coupling the light between the chip and the sample. The use of this lens leads to a signal enhancement up to 37 dB compared to the chip without a lens. The light source, the common-path arm and the detector are connected by a symmetric Y junction having a wavelength independent splitting ratio (50/50) over a much larger bandwidth than can be obtained with a directional coupler. The signal-to-noise ratio of the system was measured to be 71 dB with 2.6 mW of power on a mirror sample at a distance of 0.3 mm from the waveguide end facet. Cross-sectional OCT images of a layered optical phantom sample are demonstrated with our system. A method, based on an extended Fourier-domain OCT model, for suppressing ghost images caused by additional parasitic reference planes is experimentally demonstrated. (c) 2016 Optical Society of America |
| Databáze: | OpenAIRE |
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