[D-1-3] Flip-Chip GaInAs/InP Quad PIN Photodiodes for Polarization-Diversity Coherent Optical Receivers Hisashi HAMAGUCHI、Masao MAKIUCHI、Akito KURAMATA、Takashi MIKAWA、Osamu WADA (1.Fujitsu Laboratories Ltd.) https://doi.org/10.7567/SSDM.1991.D-1-3