2002 International Telecommunications Symposium

"In this paper we present the results of L band repeaterless DWDM field trial over 160 km of Dispersion Shifted Fiber. The test was successfully implemented in 8x2.5 GB/s using high power levels. No evidence of any impairment due non-linear effects was observed."

"In this paper we did a study of the transmission characteristics of the AOTF operating with ultra-short light pulses (2ps), for soliton and non-soliton propagation regimes. In a preliminary study one has considered the performance of the device, with several lengths, operating in the nonlinear regime without loss and in the presence of loss. In this...

"Differential delays due to fiber dispersion represent the ultimate limitation on achievable guard-times and packet durations for WDMA/TDMA ”switchless” optical transport networks. A delay compensator based on fiber gratings is proposed to decrease such delays"

"In this paper we will show the application of the asynchronous histograms for monitoring and characterizing, at low sampling rate, very high data rate systems. We will describe the method and its results for two transition functions, which correspond to two different pulse shapes. From the results we show the possibility of obtaining an amplitude...

"All-optical deflection has been obtained with a CW laser and hexane solution of beta-carotene. The mechanism exploited to obtain angular deflection was theoretically proposed by Agrawal and is based on the cross-phase modulation between two beams propagating in a nonlinear medium in the self-defocusing regime. The pump laser intensity is 510 W/cm2 and...

"We calculated the maximum distance of an HFC link by considering all noise mechanisms that contribute to CNR. Cost-effective solutions are limited to a small number of optical amplifiers in distances up to 120 km."

"We theoretically estimate the on-line BER of a mesh and ring optical network, while taking into account the impact of crosstalk and amplifier noise generation along the signal propagation over assigned lightpaths."

"Raman Fiber Amplifiers will be important for the next generation high speed dense WDM optical communications systems due to its inherent broadband characteristics, fast response, moderate gain, and low noise figure. Signal gain characteristics of Raman amplifiers have been investigated recently, but very little has been said about signal degradation...

"A technique to reduce the Semiconductor Optical Amplifier electro-optic switching times is implement. The technique, called PISIC (pre-impulse-step injected current), presented a reduction of the SOA switching times from almost 2ns (simple-step current response) to little more than 200ps (step with pre-pulse response). Forecasts done through...

"This paper proposes a technique to accomplish optical multiplexing through FWM interaction. It is theoretically argued how two OOK WDM channels may be multiplexed into a single optical ASK-4 channel. Simulation results corroborate theoretical expectations. It is also presented an analysis for optimal level detection and simulations for optical ASK-4...