A symmetric WDM-PON architecture using an innovative overlapped-SCM scheme that maximizes the spectrum usage of a bandwidth-limited RSOA is demonstrated. Error-free operation is achieved using realistic launch powers without the need for... more
A symmetric WDM-PON architecture using an innovative overlapped-SCM scheme that maximizes the spectrum usage of a bandwidth-limited RSOA is demonstrated. Error-free operation is achieved using realistic launch powers without the need for DSP or FEC.
We introduce and review the main features of subcarrier multiplexed label swapping techniques as a supporting technology for the implementation of the optical Internet. The efforts that are currently being made under the framework of the... more
We introduce and review the main features of subcarrier multiplexed label swapping techniques as a supporting technology for the implementation of the optical Internet. The efforts that are currently being made under the framework of the EU funded IST-LABELS project are also described.
A six-channel 2.4GHz subcarrier multiplexing - optical code division multiple access (SCM-OCDMA) system in conjunction with the selective excitation of LP01 and LP02 modes is presented for a multimode fiber Local Area Network. Simulation... more
A six-channel 2.4GHz subcarrier multiplexing - optical code division multiple access (SCM-OCDMA) system in conjunction with the selective excitation of LP01 and LP02 modes is presented for a multimode fiber Local Area Network. Simulation results demonstrate that mode selectivity increases the bandwidth-distance product and improves the BER performance of the channel.
The integration of heterogeneous technologies promotes ubiquity and mobility. Optical code division multiple access (OCDMA) may be deployed in conjunction to SCM to improve the spectral efficiency and enhance the data rate of subscribers... more
The integration of heterogeneous technologies promotes ubiquity and mobility. Optical code division multiple access (OCDMA) may be deployed in conjunction to SCM to improve the spectral efficiency and enhance the data rate of subscribers in a Local Area Network (LAN). This paper compares the performance of multimode fiber to single mode fiber in the deployment of a SCM-OCDMA system with multi-diagonal (MD) codes in a LAN.
Page 1. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 45, NO. 8, AUGUST 1997 1443 Fiber-Optic Links Supporting Baseband Data and Subcarrier-Multiplexed Control Channels and the Impact of MMIC Photonic/Microwave Interfaces ...
The analysis of a subcarrier multiplexing free space optical transmission system with ASK electrical modulation is presented in this paper. The designed system based on SCM-ASK-FSO allows the optimized exploration of the available... more
The analysis of a subcarrier multiplexing free space optical transmission system with ASK electrical modulation is presented in this paper. The designed system based on SCM-ASK-FSO allows the optimized exploration of the available spectral frequency bandwidth. The performance for the SCM – FSO subsystem obtained using ASK electrical modulation was evaluated in terms of eye diagram and bit error rate.
It was verified that the FSO channel does not generate intermodulation between the subcarriers, allowing a uniform interchannel spacing. The necessity of the channel insertion was evaluated as a function of the reduction in the distance between the system transceivers. SCM techniques integrated to a FSO system operating at 1550 nm were simulated with the commercial software Optisystems from Optiwave, Inc
A performance comparison among different channel estimation techniques for polarization division multiplexing coherent optical orthogonal frequency division multiplexing systems has been performed from the BER point of view. Our obtained... more
A performance comparison among different channel estimation techniques for polarization division multiplexing coherent optical orthogonal frequency division multiplexing systems has been performed from the BER point of view. Our obtained results show that the subcarrier averaged over the maximum likelihood blind channel estimation method gives the best performance for low dispersed channels. However, for high dispersed channels, it cannot be applied directly to the blind estimated channel transfer function. So, we propose a new technique for it to be applied. The proposed algorithm makes the subcarrier averaged ML blind channel estimation to be superior in its performance.
