Isolator-free 840-nm broadband SLEDs for high-resolution OCT

M. Duelk; V. Laino; P. Navaretti; R. Rezzonico; C. Armistead; C. Vélez

doi:10.1117/12.809078

20 February 2009 Isolator-free 840-nm broadband SLEDs for high-resolution OCT

M. Duelk, V. Laino, P. Navaretti, R. Rezzonico, C. Armistead, C. Vélez

Proceedings Volume 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII; 716821 (2009) https://doi.org/10.1117/12.809078
Event: SPIE BiOS, 2009, San Jose, California, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.809078

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