M. Guglielmucci

Bio: M. Guglielmucci is an academic researcher. The author has contributed to research in topics: Optical amplifier & Wavelength-division multiplexing. The author has an hindex of 4, co-authored 11 publications receiving 45 citations.

3R all optical regeneration

Abstract: The authors investigate a possible technique, based on a three stage cascade configuration, in order to implement an all-optical 3R regenerator. A multiwave-mixing based unit is used to perform simultaneously reshaping, re-amplification and wavelength conversion of a propagated signal. A fiber ring based unit is used to perform the all-optical timing extraction while a classical four-wave-mixing process inside a dispersion-shifted fibre is adopted for the retiming process.

DWDM Transparent FSO System for In/Outdoor Applications at High Bit Rates

Abstract: Free Space Optics (FSO) is a technology able to provide line of sight wireless high-bandwidth digital communication links between remote sites. Therefore it is a key solution for addressing the last hundred meters of broadband requirements. For enhancing the capacity of optical wireless links, DWDM transmission can be used. In this work, 10 Gb/s and 40 Gb/s bit rates have been used in a DWDM fully transparent system. The link has been demonstrated in both in- and outdoor experiments. System performance has been evaluated in terms of BER and Q-factor.

Performance evaluation of an all-optical clock recovery and data resampling stage for NRZ data signals

Abstract: A novel actively modelocked gain-clamped semiconductor optical amplifier based ring scheme able to recover non-return-to-zero formats at 10 Gbit/s data rate is experimentally evaluated in terms of jitter, bit-error-rate and locking time using a deployed cable

All optical 2R regenerator based on induced phase modulation on an auxiliary carrier

Abstract: A novel all-optical Reshaper Regenerator is proposed. Reshaping and conversion behaviours in a multi-wave-mixing regime inside a particular dispersion-shifted fibre are induced on a third auxiliary carrier improving the conversion range.

Optical switch and optical waveform monitoring device utilizing optical switch

Abstract: The polarization direction of an optical signal is changed by a polarization controller so as to be orthogonal to a main axis of a polarizer. A control pulse generator generates control pulses from control beam with a wavelength which is different from the wavelength of the optical signal. The optical signal and the control pulse are input to a nonlinear optical fiber. In the nonlinear optical fiber, the optical signal, during a time period in which the optical signal and the control pulse coincide, is amplified with optical parametric amplification around a polarization direction of the control pulse. The optical signal, during the time period in which the optical signal and the control pulse coincide, passes through the polarizer.

Applications of Nonlinear Effects in Highly Nonlinear Photonic Crystal Fiber to Optical Communications

Abstract: Unique dispersion characteristics and enhanced nonlinearity make the small-core photonic crystal fiber (PCF) an ideal candidate for nonlinear optical devices to telecommunication applications. Some technical reasons behind great research interest of highly nonlinear PCFs in optical communication components are reviewed. Nonlinear effects in highly nonlinear PCFs and their research progress are presented. Several typical applications including WDM sources, optical amplification, optical switching, wavelength conversion, optical regeneration and all-optical demultiplexing etc are introduced, together with state-of-the art performances. Some new possible applications and future prospects are discussed.

Optical signal waveform shaping apparatus

Abstract: An optical signal and pump light are input to a nonlinear optical medium. In the nonlinear optical medium, the optical signal is amplified with a nonlinear effect caused by the pump light. A monitor circuit monitors parametric gain in the nonlinear optical medium. A first power controller increases input power of the optical signal so that the gain reaches saturation. A second power controller controls input power of the pump light so as to obtain a desired gain.

All-optical fiber 2+1 auxiliary carrier transponder-regenerator

Abstract: The authors report simulations and experimental results about a new kind of all-optical reamplification and reshaping (2R) regenerator. The novelty is based on the principle that the ordinary four-wave-mixing process, inside a particular dispersion-shifted fiber, is able to induce input signal replicas on a third copropagating auxiliary carrier even if its state of polarization is orthogonal to that of the pump. Test results on a deployed cable showing improved 2R function and wavelength conversion capability are reported.