ABSTRACT
In PON, the enabling technology is laser, which is used in the optical line terminal (OLT) and the optical network unit (ONU) components for transmission and reception. It is used also in wave division multiplexing (WDM) with only one wavelength currently being used for each upstream and downstream direction. In Japan, the PON market is well established and growing at a rate of 300% a year, while in North America, the PON market is just starting to emerge. When compared to the DSL broadband access technology, DSL is growing at 150% a year. In the United States, Verizon, SBC, and Bell South have all announced some type of PON deployment.
