Tesis doctoral de Cristina Arellano Pinilla
This research is conducted to deal with the problem of finding cost-effective solutions for fibre-to-the-home (ftth) network deployment. In the ftth network, the transceiver at the user premises and the deployment of fibre at the last mile are the major barriers. a single-fibre topology to address each user reduces the amount of fibre required; passive optical components alleviate maintenance requirements in the access network. The rayleigh backscattering effect is identified as the most critical crosstalk in such transmission, the effect on the system performance and the investigations of possible solutions are presented in this thesis. The studies reveal that despite the rayleigh backscattering crosstalk can not be totally eliminated, several techniques can mitigate the effect. The use of the semiconductor optical amplifiers to feature transceiver tasks at the user premises adds simplicity to the network design in terms of wavelength transparency and amplification capabilities. We propose implementations with semiconductor amplifiers and test modulation and detection potentials inside the optical network. The experimental results presented in this dissemination successfully demonstrate modulation and detection at 1gbit/s and 2.5gbit/s with semiconductor-based devices, in links of 30km and even though of 50km length; bit rate of 10gbit/s is feasible with novel prototypes as well. Reflective structures based on reflective semiconductor optical amplifiers are potential candidates, as they perform transmission functions efficiently and provide adequate amplification however, it is necessary the design of further structures capable of transmitting at a higher bit rates. Bidirectional single-fibre strategy seams to be the most interesting architecture in terms reducing the capex though this requires new onu designs hence the onu becomes a key element in access networks and an interesting area of investigation. For a total successful ftth deployment the network unit mod
Datos académicos de la tesis doctoral «Investigation of reflective optical network units for bidirectional passive optical access networks«
- Título de la tesis: Investigation of reflective optical network units for bidirectional passive optical access networks
- Autor: Cristina Arellano Pinilla
- Universidad: Politécnica de catalunya
- Fecha de lectura de la tesis: 25/07/2007
Dirección y tribunal
- Director de la tesis
- Josep Joan Prat GomÁ
- Tribunal
- Presidente del tribunal: Antonio Teixeira
- muneer Zuhdi (vocal)
- sergio Ruiz moreno (vocal)
- Tosi belefi giorgio María (vocal)