Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Mikihiro Kajita"'
Publikováno v:
IEICE Transactions on Electronics. :102-109
A 4-phase clock generator, which can dynamically change clock frequencies, duty ratios and I/Q balance, is proposed for on-chip timing margin testing. The clock generator macro is integrated into the microprocessor chip of the supercomputer SX-9, whi
Publikováno v:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :448-455
Substrate noise analysis has become increasingly important in recent LSI design. This is because substrate noise, which affects PLLs, causes jitter that results in timing error. Conventional analysis techniques of substrate noise are, however, imprac
Multidimensional VCSEL-array push/pull module fabricated using the self-alignment mounting technique
Publikováno v:
Scopus-Elsevier
We have developed plastic-molded receptacle-lope vertical-cavity surface-emitting laser (VCSEL)-array modules directly push/pull connectable with the one-dimensional (1-D) conventional mechanically-transferable multifiber push-on (MPO) fiber connecto
Autor:
Kenichi Kasahara, Kaori Kurihara, Hideo Kosaka, T. Kawakami, Takashi Yoshikawa, Mikihiro Kajita, Hideaki Saito, Yoshimasa Sugimoto
Publikováno v:
IEEE Journal of Quantum Electronics. 34:1009-1015
Relative intensity noise (RIN) in a vertical-cavity surface-emitting laser (VCSEL) was greatly reduced through the use of polarization control to eliminate competition between two orthogonal polarization states by ensuring there was only one polariza
Autor:
Yoshimasa Sugimoto, M. Nido, T. Kawakami, Kaori Kurihara, A. Kimura, Mikihiro Kajita, Takashi Yoshikawa, Kenichi Kasahara
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 1:654-660
Temperature-insensitive characteristics are of great importance in implementing the actual applications of vertical-cavity surface-emitting lasers (VCSEL's) because of the temperature change in the surroundings. To extend the operational temperature
Autor:
K. Kuhn, Takahiro Numai, Hideo Kosaka, Kenichi Kasahara, Mikihiro Kajita, Hideaki Saito, Kaori Kurihara, Ichiro Ogura
Publikováno v:
IEEE Journal of Quantum Electronics. 31:636-642
We propose and demonstrate control of light-output polarization for surface-emitting laser-type devices by using strained quantum-well active layers grown on a misoriented substrate. This structure has slightly asymmetric strain tensor elements on th
Publikováno v:
2008 IEEE Symposium on VLSI Circuits.
Presented here is a thermal sensor, based on transistor off-leakage current, that allows measurement error of less than 3.1degC at 90degC and less than 2degC at 10% Vdd deviation. For experimental evaluation, 11 thermal sensors, each of which occupie
Autor:
Ian Redmond, Tae Jin Kim, Eugen Schenfeld, Kenichi Kasahara, David T. Neilson, Ichiro Ogura, Mikihiro Kajita
Publikováno v:
Applied optics. 37(17)
Wavelength-division multiplexing (WDM) techniques provide many advantages for building optical interconnect networks for massively parallel processing (MPP) systems. A design for a 1024-channel network for MPP systems based on the interconnection-cac
Publikováno v:
ISSCC
A clock generator fabricated in 90nm CMOS occupies 300times128mum2 die area and dissipates 40mW at 1.2V. An interleaved clock-edge control technique extends the frequency tuning range and enables control of both rising and falling edge timing. A cloc
Publikováno v:
ISSCC
This paper reports the development of an in-field real-time successive jitter-measurement macro whose features include 1-ps resolution jitter measurement. The newly developed jitter-measurement macro has four key features: 1) interpolated jitter over