Surface passivation of Cu cone bump by self-assembled-monolayer for room temperature Cu-Cu bonding. - Akihiro Ikeda; L. J. Qiu; K. Nakahara; Tanemasa Asano (3DIC, 2013)

Uncooled clear-eye-opening operation (25 to 95°C) of 25.8/28-Gbps 1.3-µm InGaAlAs-MQW directly modulated DFB lasers. - T. Fukamachi; Atsushi Nakamura; Yasushi Sakuma; Shigenori Hayakawa; Ryu Washino; M. Mukaikubo; K. Okamoto; T. Nakajima; K. Motoda; Kazuhiko Naoe; K. Nakahara; Yuki Wakayama; et al. (OFC, 2014)

Facet-free surface-emitting 1.3-μm DFB laser. - Koichiro Adachi; Takanori Suzuki; T. Ohtoshi; K. Nakahara; M. Sagawa; Akira Nakanishi; Kazuhiko Naoe; Shigehisa Tanak (ECOC, 2015)

25.8 Gbps error free transmission over 10 km at wavelengths from 1271 to 1331nm by uncooled (25 to 85°C) directly modulated DFB lasers for 100G-CWDM4. - Takayuki Nakajima; T. Fukamachi; Mitsuo Akashi; Atsushi Nakamura; Yasushi Sakuma; Shigenori Hayakawa; Ryu Washino; M. Mukaikubo; K. Okamoto; K. Motoda; Kazuhiko Naoe; K. Nakahara; et al. (OFC, 2015)