[D-6-5] Broadly Wavelength Tunable DBR Lasers with Modified Multiple-Phase-Shift Super Structure Grating H. Ishii、Y. Tohmori、M. Yamamoto、T. Tamamura、Y. Yoshikuni (1.NTT Opto-electronics Laboratories) https://doi.org/10.7567/SSDM.1993.D-6-5