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We newly propose a simple wavelength selective switch, which in principle consists of an arrayed waveguide grating and an optical cross-connect switch, and demonstrate the selection performance and error-free transmission of three radio-over-fiber channels.
Ground-to-satellite laser communication experiments between the optical ground station developed by the National Institute of Information and Communications Technology (NICT) located in Koganei, Tokyo and a low-earth-orbit (LEO) satellite, the Optical Inter-orbit Communications Engineering Test Satellite (OICETS) called "Kirari" developed by the Japan Aerospace Exploration Agency (JAXA),...
An experimental investigation on full ultra-wideband radio-on-fiber transmission is presented. It is the first time to demonstrate optical modulation, 200-m-long fiber-optic transmission, and photo detection of a full ultra-wideband signal generated by a novel bandpass filter
We describe ultra-wideband radio-wave generation techniques using an optical frequency-shift-keying modulator consisting of two sub Mach-Zehnder (MZ) structures embedded in a main MZ structure. The modulator can achieve high-speed frequency control and high extinction-ratio
To overcome the scarcity of available radio frequency (RF) resource, ultra-wideband (UWB) attracts its attention as one of next generation high-speed radio communication technologies because UWB systems can share the RF band with existing conventional narrowband radio systems. If such UWB signal can be delivered through optical networks without distance limitation, various standalone UWB applications...
We demonstrate for the first time the full-duplex transmission of 25-GHz spacing dense wavelength-division multiplexing (DWDM) millimeter-wave-band radio-on-fiber (RoF) system using a supercontinuum (SC) light source and optical frequency interleaving technique. In the proposed scheme, filtering response of the arrayed waveguide gratings for demultiplexer and multiplexer is used for suppression of...
We demonstrate 25-GHz-spacing optical-frequency-interleaved DWDM 60-GHz-band radio-on-fiber downlink experiment using an supercontinium light source and arrayed-waveguide gratings (AWGs). Filtering response of the AWGs is used for simultaneous suppression of undesired sidebands for all the channels.
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