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Proceedings Paper

Combined-SLED source for UHR-OCT and SLO integrated in 14-pin butterfly module
Author(s): S. Gloor; J. Ojeda; J. Dahdah; N. Primerov; M. Duelk; C. Velez
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Paper Abstract

We demonstrate a novel light source for multi-modality imaging where three superluminescent diodes (SLEDs) are integrated on a free-space, temperature-stabilized, micro-optical bench in a standard 14-pin butterfly package. The light output of the three SLED chips is collimated by individual micro-optical collimation lenses and then spectrally and spatially combined in free space through dielectric edge filters before being coupled into a common HI-780 single-mode output fiber. The two SLEDs at 840 nm and 880 nm deliver a combined broadband spectrum with 120 nm bandwidth and 8.5 mW of output power for ultra-high-resolution optical coherence tomography (OCT) imaging with an axial resolution of ~4 microns in air. The third SLED at 750 nm is suitable for implementing eye tracking based on a scanning laser ophthalmoscope (SLO). Because of the free-space architecture, the polarization of all SLEDs is intrinsically aligned such that the UHR-OCT broadband source has a high PER of 20 dB across the entire spectrum.

Paper Details

Date Published: 21 February 2020
PDF: 3 pages
Proc. SPIE 11228, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIV, 112282N (21 February 2020); doi: 10.1117/12.2549082
Show Author Affiliations
S. Gloor, EXALOS AG (Switzerland)
J. Ojeda, EXALOS AG (Switzerland)
J. Dahdah, EXALOS AG (Switzerland)
N. Primerov, EXALOS AG (Switzerland)
M. Duelk, EXALOS AG (Switzerland)
C. Velez, EXALOS AG (Switzerland)

Published in SPIE Proceedings Vol. 11228:
Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIV
Joseph A. Izatt; James G. Fujimoto, Editor(s)

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