A 25-Gb/s × 4-Ch, 8 × 8 mm2, 2.8-mm thick compact optical transceiver module for on-board optical interconnect. - Norio Chujo; Toru Yazaki; Toshiaki Takai; Daichi Kawamura; Yasunobu Matsuoka; Yong Lee; Toshiki Sugawara; Hiroki Yamashita; Takashi Takemoto; Yoshiaki Ishigami; Kinya Yamazaki; Yoshinori Sunaga; et al. (OFC/NFOEC, 2013)