RESUMO
A detalled investigation of the coupled dynamlcs of the copropagatlng and counterpropagatlng polarlzation states in the optical loop fiber of a nonlinear amplifying loop mirror is performed Analysis of the dynamlcs yields evidence for the existence of a polarization-insensitive cofiguration of the device.
RESUMO
Transparency of a 91-km distributed erbium-doped fiber is achieved with 0.46 mW/km of pump power at a signal power of -12 d Bm. The accumulation of amplif ier noise is measured to be smaller than the minimum noise accumulation that can be achieved in a 91-km link with two lumped amplifiers separated by 45 km.
RESUMO
A theoretical analysis of the noise properties of an Er-doped superfluorescent fiber source is presented. The optimum fiber design with respect to the signal-to-noise ratio and output power is found.
RESUMO
Initial overlap between solitons propagating at different carrier frequencies gives rise to a change in the frequencies of the solitons. The frequency change can have a severe effect on the transmission system because it will result in a time displacement of the solitons that is due to the fiber dispersion. The frequency change caused by initial overlap between two solitons at different carrier frequencies is calculated for a transmission system with periodic gain and loss.
RESUMO
A simple fiber-optic temperature sensor is constructed that uses the temperature dependence of microbending loss. The sensor is tested and shows high sensitivity and a strict linear scale over a wide range from 20 to 180 K. It is shown that a proper choice of signal wavelength can be used either to make the sensor more sensitive or to make it independent of changes in laser wavelength.
