Carrier generation using a dual-frequency distributed feedback waveguide laser for phased array antenna (PAA)M. R. H. Khan, M. F. Islam, G. Sarowar, T. Reza and M. A. HoqueJ. Eur. Opt. Soc.-Rapid Publ., 13 1 (2017) 30DOI: https://doi.org/10.1186/s41476-017-0058-4