— Optical burst switching (OBS) is one promising method for data transfer in photonic networks based on a WDM (Wavelength Division Multiplexing) technology. In the OBS scheme, the wavelength is exclusively reserved along the source and destination nodes, when the burst data is generated at the source. Then, efficient data transfer is expected. However, its… (More)
—Lightwave networks realized through code division multiple access techniques are extensively studied to determine their ultimate capabilities. Here, these concepts are extended to network implementation by introducing an optical code division multiplexing (OCDM) multihop strategy using optical coding. It is shown that this approach is effective in scaling… (More)
SUMMARY Optical code division multiplexing (OCDM) is the other class of multiplexing techniques than time division mul-tiplexing (TDM), wavelength division multiplexing (WDM) and space division multiplexing (SDM). OCDM has been proposed in mid '70s. It has been long since OCDM remains outside the mainstream of research community of optical communications,… (More)
We demonstrate the transmission of 6.4 Tbit/s OCDM/WDM (4 OCDM x 40 WDM x 40 Gbit/s) using only C-band wavelength region. A record of 1.6 bit/s/Hz spectrum efficiency is achieved by QPSK optical encoding/ decoding along with optical time-gating and optical thresholding in addition to polarization multiplexing.
An energy-efficient, high-performance optoelectronic packet switching for intra-data center (DC) network is presented, in which hybrid optoelectronic packet routers (HOERs) are interconnected with 100 Gbps (25 Gbps×4 wavelengths) links. A novel “Express path (ExP)” is introduced to enable the flow control. Packets, which are a part of a… (More)
A government-supported R&D initiative, " Optical Burst Switching Network " for five years, 2001-2005 is introduced. It is a comprehensive program, including the network architecture, wavelength reservation protocol, ultrafast processing of control packet, and switching fabric.