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Dynamic optical switching was first demonstrated in 172-Gbit/s OTDM transmissions of real ultra-high definition video signals, using truly in-band clock distribution with channel identification and newly developed CMOS-based transceivers, quantum-dot SOAs, monolithic ISBT all-optical gate.
Link-disjoint routing strategy can offer a set of reliable alternate paths when the active best path fails. However, simply employing a set of fully disjointed paths may not necessarily result in the efficient network resource utilization in some circumstances, which degrades the performance of the network system under a highly loaded traffic condition. In this study, we propose two heuristic link-disjoint...
In this paper, an all optical wavelength multicasting service in AWG-based WDM PON is introduced, and a novel architecture supporting multiple multicasting groups is proposed. The novel characteristic is that different from the PON systems which broadcast the signals to all the receivers, multicasting signals are only delivered to desired users. This restricted member multicasting brings the trusted...
In this paper, an all optical wavelength multicasting service in AWG-based WDM PON is introduced. Two novel architectures of remote node supporting all optical wavelength multicasting functionality are proposed. The interesting characteristic of this function is that, different from the current PON systems which broadcast the signals to all the receivers, here, multicasting signals will be delivered...
We generated optical soliton pulses using an optical pulse synthesizer having an arrayed waveguide grating, phase modulators and intensity modulators. We experimentally clarified optimal pulse shape for fiber transmission through different dispersion fibers.
We developed fiber sensor network with optically-powered sensor nodes. Power-circuits consisting of single PV-cell and a DC-DC converter supplied stable and sufficient power to sensor nodes with a high conversion efficiency of 25%.
We propose and demonstrate tunable pulse compression technique using an optical pulse synthesizer. The technique showed tunability of compressed pulse widths and shapes by line-by-line manipulation of initial pulses.
We demonstrate the burst-mode optical amplifier for 1310 nm. Even when the input burst length varies rapidly from 500 ns to 50 mus, the gain error within plusmn 0.5 dB is achieved.
At a switching node in an optical packet switching (OPS) network, packet contention occurs whenever two or more packets try to reach the same output port of the node at the same wavelength, consequently it degrades network performance. Previous works on optical packet switching flourishingly adopted optical buffering with optical fibre delay line (FDL), wavelength conversion, or deflection routing...
A novel profilometry using a waveguide-type frequency comb generator was presented. Thickness measurement of a glass plate was successfully demonstrated by sweeping comb interval frequency without mechanical scanning.
Fiber optic power and signal transmission systems are discussed from the viewpoint of their application to DC powering to information tools such as personal computers. We discuss the system requirements and the technical issues of the system components including high power laser diodes and photovoltaic cells. We also discuss wavelength division multiplexing transmission of power and signal light.
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