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Technology Stocks : The *NEW* Frank Coluccio Technology Forum

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From: Frank A. Coluccio	11/23/2009 12:14:46 AM
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WDM PON: How Long Is It Going To Take? Frost & Sullivan \| 16 Nov 2009 Abstract: WDM PON adds multiple wavelengths in the fiber to increase capacity in the access technology system. Although, physically it is similar to TDM based PON technologies, logically it is a point to point scheme. Each ONT at the subscriber has a dedicated wavelength and there is no time sharing of bandwidth. The limit to the bandwidth that the user can receive depends on what the wavelength can carry. The splitter in TDM PON systems is replaced by an arrayed waveguide grating (AWG) which routes each wavelength to its destination ONT. Unlike TDM PON system, a subscriber gets only the information destined for it. WDM PON has the promise of improving the metrics of bandwidth, split ratio and reach over traditional PON technologies. With WDM PON, a virtual PON can be created for each subscriber using multiple waves on a single fiber. The Full Service Access Network (FSAN) is an organization made up of operators and vendors and is working on standards for Next-Generation Access (NGA) beyond GPON. FSAN has two approaches to developing a future PON standard. One of the approaches is to agree on a Next Generation (NG) PON technology that can coexist with the existing GPON technology and standards. Technologies such as stacked GPON and long distance GPON fit into this approach. The other approach is to develop a new technology independent of GPON. WDM PON is the most promising technology for the second approach. Complete release: frost.com ------

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