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Journals and Conferences
We have successfully fabricated a 100-GHz spacing 8-channel light source using hybrid integration technologies based on planar lightwave circuits (PLCs). The light source was composed of UV-written… (More)
The extension of optical add/drop multiplexing (OADM) systems to metro-core and metro-access networks has led to the need for economical and compact OADM devices. In this paper, we demonstrate a… (More)
We demonstrated an extremely low power consumption thermooptic switch using suspended ridge and silicon-silica hybrid waveguide structures. The switching power was successfully reduced to only 0.6 mW.
We propose a silica-based 2/spl times/2 thermooptic switch using heat insulating grooves and trenches on a Si substrate to reduce electric power consumption. The switching power of a fabricated… (More)
We constructed a lens-free in-line optical isolator by embedding an isolator chip in a thermally expanded core (TEC) fiber without complicated optical alignment. The chip consists of two pairs of… (More)
We demonstrate congestion controlled optical burst switching utilizing two-way signaling in field trials. The optical bursts, created in each node with Poisson probability, were routed within 20 ms.
Type 2 diabetes mellitus is thought to be a significant risk factor for Alzheimer's disease. Insulin resistance also affects the central nervous system by regulating key processes, such as neuronal… (More)
We have successfully demonstrated an all-in-one coherent receiver for 112-Gbit/s DP-QPSK signal detection by developing a new silica-based PLC hybrid integration technology with multi-channel micro… (More)
We achieved successful low-input-power (-10 dBm) wavelength conversion at 10 Gb/s by using a hybrid integrated cross-phase modulation wavelength converter (XPM-WC). The input CW power was also -10… (More)
We have developed an ultra small 8ch variable optical attenuator multiplexer (V-AWG) with excellent optical performance using multi-chip planar lightwave circuit (PLC) technology. The insertion loss… (More)