Affidabilità di laser sintonizzabili di tipo innovativo per applicazioni in sistemi di telecomunicazione

The demand for broadband services is expected to increase worldwide at an accelerated pace in the next future . To allow the mass introduction of the broadband access services, however, a number of technological barriers still need to be overcome, in particular, research is presently very active in the field of photonics, aimed at the development of a new generation of photonic devices based on nanotechnology. This should allow to solve in a cost-effective way the so called ‘metro bottleneck’, that is the congestion in the metropolitan access infrastructure, expected to arise for the increased traffic flowing from the access network. To the telecommunications ‘backbone’, and viceversa, due to increase of capacity demand from the customers, in order to be successful, innovative photonic products must of course satisfy a number of performance requirement, either economical and technical , and in particular they must be designed and manufactured in such away as to guarantee that the will operate reliably for as long a period as possible. The study reported in this thesis consists in the full reliability assessment of a new product designed and manufactured by Pirelli, that is a tunable laser of new conception, based on photonic nanotechnologies.