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Proceedings Paper

Automated heterodyne method to characterize semiconductor based akinetic swept laser sources
Author(s): Carlos Reyes; Tomasz Piwonski; Brian Corbett; Brendan Roycroft
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Paper Abstract

An automated heterodyne method is proposed to characterize sampled grating distributed Bragg reflector (SG-DBR) lasers in terms of their lasing output wavelength, side-mode suppression ratio (SMSR) and output power. Such lasers are the core of akinetic all-semiconductor based swept sources for Optical Coherence Tomography (OCT) systems. The purpose of the paper is to demonstrate the technique and obtain a broader optical and electrical understanding in DC and AC operation. A JDSU Agile SG-DBR laser was characterized and found to have a tuning range ≈ 60 nm, a center wavelength λc = 1540 nm and average lasing power of 10 mW. The result of the AC characterization is a ‘tuning dictionary' that contains 379 tuning points (10 μs per tuning point).

Paper Details

Date Published: 19 July 2019
PDF: 12 pages
Proc. SPIE 11078, Optical Coherence Imaging Techniques and Imaging in Scattering Media III, 110780X (19 July 2019); doi: 10.1117/12.2526376
Show Author Affiliations
Carlos Reyes, Univ. College Cork (Ireland)
Tomasz Piwonski, Univ. College Cork (Ireland)
Cork Institute of Technology (Ireland)
Brian Corbett, Univ. College Cork (Ireland)
Brendan Roycroft, Univ. College Cork (Ireland)

Published in SPIE Proceedings Vol. 11078:
Optical Coherence Imaging Techniques and Imaging in Scattering Media III
Maciej Wojtkowski; Stephen A. Boppart; Wang-Yuhl Oh, Editor(s)

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