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  • Optical Coherence Imaging Techniques and Imaging in Scattering Media III
  • SPIE Proceedings (Optica Publishing Group, 2019),
  • paper 11078_32
  • https://doi.org/10.1117/12.2526376

Automated heterodyne method to characterize semiconductor based akinetic swept laser sources

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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).

© 2019 SPIE/OSA

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