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20 February 2009 Isolator-free 840-nm broadband SLEDs for high-resolution OCT
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Abstract
We have developed ultra-broadband Super-Luminescent Emitting Diodes (SLEDs) at 840 nm with a 3-dB bandwidth of 45-75 nm. The SLEDs show high robustness against back-reflections of up to 50% with little change in coherence length, sidelobe suppression ratio and secondary peak suppression over a wide range of back-reflections. First long-term measurements do not show any signs of device degradation. Hence, these SLEDs can be employed in OCT systems without costly broadband optical isolators.
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M. Duelk, V. Laino, P. Navaretti, R. Rezzonico, C. Armistead, and C. Vélez "Isolator-free 840-nm broadband SLEDs for high-resolution OCT", Proc. SPIE 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII, 716821 (20 February 2009); doi: 10.1117/12.809078; https://doi.org/10.1117/12.809078
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