Hiroki YAMASHITA


25-Gbps 3-mW/Gbps/ch VCSEL Driver Circuit in 65-nm CMOS for Multichannel Optical Transmitter
Toru YAZAKI Norio CHUJO Takeshi TAKEMOTO Hiroki YAMASHITA Akira HYOGO 
Publication:   
Publication Date: 2018/02/01
Vol. E101-A  No. 2  pp. 402-409
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
optical transmitterVCSEL driveroptical interconnectsasymmetric pre-emphasis
 Summary | Full Text:PDF(4.5MB)

A 50-Gb/s Optical Transmitter Based on a 25-Gb/s-Class DFB-LD and a 0.18-µm SiGe BiCMOS LD Driver
Takashi TAKEMOTO Yasunobu MATSUOKA Hiroki YAMASHITA Takahiro NAKAMURA Yong LEE Hideo ARIMOTO Tatemi IDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/09/01
Vol. E99-C  No. 9  pp. 1039-1047
Type of Manuscript:  PAPER
Category: Optoelectronics
Keyword: 
optical transmitterlens-integrated DFB-LDLD driver0.18-µm SiGe BiCMOS technologypre-emphasis
 Summary | Full Text:PDF(3.2MB)

A Low-Power Write Driver for Hard Disk Drives
Tatsuya KAWASHIMO Hiroki YAMASHITA Masayoshi YAGYU Fumio YUKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/11/01
Vol. E89-C  No. 11  pp. 1670-1673
Type of Manuscript:  Special Section LETTER (Special Section on Novel Device Architectures and System Integration Technologies)
Category: 
Keyword: 
write driverpreamplifierMOS transistorreflection cancellation
 Summary | Full Text:PDF(1.1MB)