Over 720 Ghz (5. 8nm) frequency tuning by a 1.5 μm DBR laser with phase and Bragg wavelength control regions

Abstract
A 1.5 μm distributed Bragg reflector (DBR) laser with phase and Bragg wavelength control regions was newly developed. Over 720 GHz (5.8 nm) continuous frequency tuning with 2mW light output were achieved for the first time.