Results 171 to 180 of about 20,626 (216)

Interchannel cross-talk in FWM-based phase conjugators

SPIE Proceedings, 2003
When a Kerr medium is pumped by a strong laser beam, the nonlinear process of four-wave mixing (FWM) can mix the pump laser and a weak signal to generate a phase-conjugated version of the signal. Optical phase conjugation (OPC) may be employed to compensate the chromatic dispersion and nonlinearity of transmission fibers.
Haiqing Wei, Xin Xue, David V. Plant
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FWM in silicon nanocrystal-based sandwiched slot waveguides

Optics Communications, 2010
Abstract The observation of four-wave mixing in a 6 mm long sandwiched slot waveguide filled with Si-nc/SiO 2 is reported for optical powers usually employed in telecommunication systems. A −47 dB conversion efficiency is measured in fabricated waveguides for input signal powers around 12 dBm on chip and a waveguide length of 6 mm.
Javier Blasco, Jose V. Galán, Pablo Sanchis, Jose M. Martínez, Alejandro Martínez, E. Jordana, Jean M. Fedeli, Javier Martí   +7 more
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Das Flachwassermodell (FWM)

2013
In diesem Kapitel behandeln wir den wichtigen Spezialfall des barotropen Modells, und zwar in seiner einfachsten Form fur ein inkompressibles Fluid. Das denken wir uns verwirklicht durch eine Wasserschicht konstanter Dichte. Daher mussen wir zuerst zeigen, ob dies ein brauchbares Modell fur die gasformige kompressible Atmosphare ist.
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Four-Wave-Mixing (FWM)

2004
Four-Wave-Mixing (FWM), or sometimes four-photon-mixing (FPM), describes a nonlinear optical effect at which four waves or photons interact with each other due to the third order nonlinearity of the material. As a result, new waves with sum and difference frequencies are generated during the propagation in the waveguide.
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Algorithms for FWM-aware routing and wavelength assignment

Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678), 2004
This work presents a study on the impact of the four wave mixing in dynamic optical networks. We have proposed two algorithms for routing and wavelength assignment based on the limitations imposed by four wave mixing crosstalk. When the efficiency of the effect is not very high, the algorithms present a good performance in order to minimize the four ...
I.E. Fonseca, R.C. Almeida, M.R.N. Ribeiro, H. Waldman   +3 more
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Exciton–exciton correlation effects on FWM in GaN

physica status solidi (b), 2003
AbstractBound and unbound biexcitons in a free‐standing bulk GaN are investigated by time‐integrated and spectrally‐resolved four‐wave mixing measurements, where the formation of hetero‐biexcitons that consist of A and B excitons (XXAB) as well as A biexcitons and their unbound biexciton are clearly observed.
Satoru Adachi, Hirotaka Sasakura, Shunichi Muto, Kouji Hazu, Takayuki Sota, Shigefusa F. Chichibu, Takashi Mukai   +6 more
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System Characterization of a SOA-FWM Wavelength Converter

Frontiers in Optics 2011/Laser Science XXVII, 2011
An empirical characterization of SOA-FWM wavelength conversion is presented. The converted signal BER was analyzed for OOK transmission rates up to 12.5 Gb/s and different input channel optical powers.
E. C. Magalhães, R. C. Figueiredo, N. S. Ribeiro, E. Conforti, A. C. Bordonalli   +4 more
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Nonlinear FWM effects management and FWM system performance analysis in ultra wide optical wavelength division multiplexing systems

Journal of Optical Communications
Abstract This paper has highlighted the nonlinear FWM (fourwave mixing) effects management and FWM system performance analysis in ultra wide optical wavelength division multiplexing systems. The optical output power is measured with the fiber propagation length based on first/second signals and first/second induced signals.
Govindaraj Ramkumar, Govindanaidu Damodaran Vignesh, Manimaran Arjunan, Priscilla Mohanadoss, Ramachandran Vidhya Muthulakshmi, Mandyam Venkatanaresh, Ayman Zain Hedaman   +6 more
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Pump-wavelength dependence of FWM performance in semiconductor optical amplifiers

IEEE Photonics Technology Letters, 1997
We report on experimental investigation of the dependence on pump-wavelength of efficiency and signal to background ratio of a wavelength converter based on four-wave mixing in a semiconductor optical amplifier (SOA). The signal wavelength has been varied over a 60-nm range at fixed signal-converted detuning.
MARTELLI F., D’OTTAVI A., GRAZIANI L., MECOZZI, ANTONIO, SPANO P., GUEKOS G., ECKNER J., DALL’ARA R.   +7 more
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Lineare Wellen im Flachwassermodell (FWM)

2013
Die obigen Gleichungen (14.20) bis (14.22) fur das FWM wollen wir im Hinblick auf Wellenlosungen studieren. Der Meeresboden sei horizontal (∇ϕb = 0); dann kann man in den beiden Bewegungsgleichungen ϕs durch ϕ ersetzen: $$ \frac{{Du}} {{Dt}} - fv + \frac{{\partial \Phi }} {{\partial x}} = 0 $$ (15.1) $$ \frac{{Du}} {{Dt}} - fu + \frac ...
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