Ermes Project
For the Next Generation Access Network (NGAN) wavelength division multiplexed passive optical networks (WDM PON) appear a promising and suitable solution offering almost unlimited bandwidth similarly to point-to-point links, while allowing the advantages of fibre sharing.
It is widely recognized that WDM PON deployment requires colourless Optical Network Unit (ONU) transmitters, so that each user has the same transmitter. Up to now these characteristics has been unsatisfactorily obtained either with a costly tunable transmitter or by exploiting external seeding sources.
