National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Measurement of intermodal dispersion in a twin-core optical fibre
Peterka, Pavel ; Kaňka, Jiří ; Honzátko, Pavel
The intermodal dispersion (IMD), that arises from the difference of group delays of the two fundamental modes of the twin-core fibre (TCF), could have a detrimental effect for usage of TCF in high-speed applications. Therefore, its accurate determination is of a high interest. We have estimated the IMD from the fibre refractive index profile and we have determined it from the interference pattern in spectral domain and from the repetition rate of passively mode-locked fibre laser incorporating TCF.
Perfectly matched layer as a boundary condition for modelling dielectric waveguide structures
Čtyroký, Jiří
Physical principle of the "perfectly matched layer" as a boundary condition for numerical modelling of open waveguide problems is explained. As an example, spectral properties of waveguide grating are calculated using the mode matching method with perfectly matched layers as a boundary condition.
Transmission of packetized traffic over WDM through a cascade of EDFA's: experiment and simulation
Karásek, Miroslav
Transmission of burst-mode, packet data through a cascade of five erbium-doped fiber amplifiers is investigated experimetally and theoretically. Suppression of cros gain saturation in EDFAs by gain clamping the first EDFA has been studied.
Widely tunable EDF ring laser for test and measurement
Karásek, Miroslav ; Bellemare, A.
The possibilty of wideband tunability in erbium-doped fiber ring lasers is demonstrated through simulations and experiments. The laser design uses a single gain medium working in deep saturation to achieve tunability over the C and L bands.

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