Self-aligned micro-optic integrated photonic platform
| Autor: | José Luis Rubio Guivernau, Massimo Mastrangeli, Aleksandar Jovic, Juan Sancho Durá, Kirill Zinoviev, Nuria Sanchez Losilla, E. Margallo-Balbas, Gregory Pandraud, Pasqualina M. Sarro |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
medicine.diagnostic_test business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Collimator 01 natural sciences Waveguide (optics) Atomic and Molecular Physics and Optics Collimated light law.invention 010309 optics Lens (optics) Interferometry Optics Optical coherence tomography law 0103 physical sciences medicine Electrical and Electronic Engineering Photonics business Engineering (miscellaneous) Beam splitter |
| Zdroj: | Applied Optics, 59(1) |
| ISSN: | 2155-3165 1559-128X |
| DOI: | 10.1364/ao.59.000180 |
| Popis: | In this work, we present the fabrication technology of a monolithically integrated photonic platform combining key components for optical coherence tomography (OCT) imaging, thereby including a photonic interferometer, a collimating lens, and a 45◦ reflecting mirror that directs the light from the interferometer to the collimator. The proposed integration process simplifies the fabrication of an interferometric system and inherently overcomes the complexity of costly alignment procedures while complying with the necessarily stringent optical constraints. Fabricated waveguide characterization shows total optical losses as low as 3 dB, and less than 1 dB of additional loss due to the Si 45◦ mirror facet. The alignment standard deviation of all components is within 15 nm. The integrated lens profile achieves a divergence angle smaller than 0.7◦, which is close to that of a collimator. The proposed photonic platform provides the premise for low-cost and small-footprint single-chip OCT systems. |
| Databáze: | OpenAIRE |
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