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We present a 7-core radiation hardened optical fiber amplifier for application in telecommunication satellites. The amplifier is part of a solution that aims to overcome bottleneck problems associated with saltellites, such as size and weight reduction together with information capacity growth.
Fibre sensitivity to the temperature, longitudinal strain or pressure, is a very important fibre feature in many applications, such as sensing application or telecommunication. The most common way to modify (either mitigate or strengthen, depending on application) this sensitivity is to change the material properties by doping or to employ microstructured fibres. In some cases the precise adjustment...
The progress in high power fibre lasers is mainly due to the improvement of the fibre geometry. High power fibre lasers rely mostly on fibres with large mode area (LMA) and very low numerical aperture (NA) [1]. This allows achieving the high power output beam with excellent beam quality. However such fibres only weakly confine light, and thus they are very sensitive to the bending. Due to the large...
The paper presents the constructions of fiber laser based on double-clad (DC) neodymium-doped polarization maintaining fiber (PM) as the active medium. Cavity resonator consisted of Bragg gratings inscribed in the passive core of DC as well. Front pumping has been applied by means of pumps having different spectra emission. Laser emission of 1.06 mum makes power lasers a big challenge to neodymium-doped...
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