Dense Wavelength Division Multiplexing （DWDM） emerges for increasing the network capacity for longer transmission distance

but its complication and expensive component restrict its cost effective uses in metropolitan networks. A newly developed low water peak single mode fiber has been designed to best suited for CWDM system. The newly developed fibers have low attenuation over wide range of operating bands including water peak at 1 3803 nm. Low water peak fiber with CWDM system can be used in about 33% more channel than conventional SMF in the same system. The fiber undergone robust environmental testing that enables its stability against hydrogen-induced attenuation

to ensure long-term reliability of field installed optical fiber cables. With its enhanced bend sensitivity make it compatible with recently deployed broadband access technology called Fiber to the Premises （FTTP）.