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Achieving the 10 Gbit/s transmission in RSOA-based WDM PON systems is one of the important challenges because of its strict modulation bandwidth. This paper describes various state-of-the-art techniques to overcome this issue.
We demonstrate a simple self-polarization-stabilization technique for the long-reach RSOA-based WDM PON implemented with self-homodyne receivers. The effectiveness of this technique is confirmed in 2.5-Gb/s transmission experiments over 68-km long link partially composed of installed fibers.
Radio system architecture has drastically changed thanks to the evolution of optical fibre technologies. This paper describes optical access technologies that contribute to the efficient construction of radio systems including mobile communication and terrestrial digital media broadcasting.
We investigate the effectiveness of optical frequency dithering to enhance the reflection tolerance of RSOA-based WDM PONs. We show that the reflection-induced penalty can be substantially reduced in both directions by the same dithering frequency.
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.
We propose a simple and precise time distribution technique utilizing multipoint control protocol in EPON, and also experimentally demonstrate time transfer within plusmn100 ns and frequency synchronization within plusmn10-10.
We propose an EPON-based intranet system using newly developed ONU-embedded PCI cards. We confirm the practical feasibility of the system by clarifying the features and assessing the performance.
We have proposed and demonstrated a cost-effective 1:N OLT redundant protection architecture using an optical switch. We have confirmed its practical feasibility by validating automatic restoration of a broadcasting TV service in an EPON system.
We have analyzed performance of the PON system adopting token passing for achieving high downloading speed. A virtue of the token passing has been revealed by numerical calculations.
We have proposed a hybrid TDM-WDM EPON repeater aggregating 16 EPONs with single fiber, and have experimentally confirmed that an extended power budget of more than 20 dB is achievable with no performance degradation.
We experimentally investigate and demonstrate the effectiveness of the laser current dithering technique to mitigate the performance deterioration of analog video due to optical multiple reflections in the optical RF video distribution systems.
QoS guaranteed optical network technologies, such as GE-PON, digital ROF, RPR and MPLS/GMPLS, for fixed and mobile broadband services are presented. Network management for multi-layer networks and resource management for advanced high-quality network services are also presented.
We have developed a digital terrestrial broadcasting transport system to realize the broadcast infrastructure based on a SDH network, and confirmed a high accurate frequency transmission of OFDM sample clock in a SDH network.
We report a bit-rate transparent optical burst switching (OBS) router prototype using a fast 5 times 5 PLZT [(Pb,La)(Zr,Ti)O3 ] optical matrix switch. Dynamic switching in a two-wavelength, 2 times 2 OBS switch is demonstrated. Contention resolution using a tunable Mach-Zehnder interferometer wavelength converter for both 40- and 10-Gb/s bursts is demonstrated for the first time. Error-free operation...
We present the fundamental performance of 64-ONU GE-PON system for providing the current triple play services, and demonstrate a 10 Gbps EPON system using burst-mode transceivers as a promising next-generation optical access system.
We present a new optical label switching node prototype. In-band label driven fast matrix switch and wavelength conversion capability enables dynamic forwarding and contention resolution of 10Gbps payload. Analysis shows cascadibility up to 10 nodes.
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