Recent Advances in DFB Lasers for Ultradense WDM Applications Funabashi, M. ; Nasu, H. ; Mukaihara, T. ; Kimoto, T. ; Shinagawa, T. ; Kise, T. ; Takaki, K. ; Takagi, T. ; Oike, M. ; Nomura, T. ; Kasukawa, A. Abstract Publication: IEEE Journal of Selected Topics in Quantum Electronics Pub Date: March 2004 DOI: 10.1109/JSTQE.2004.826576 Bibcode: 2004IJSTQ..10..312F