Ascend Communications (ASND) Message Board

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Technology Stocks : Ascend Communications (ASND)

ASND 210.50

+0.6%

3:59 PM EST

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To: Sector Investor who wrote (27307)	12/10/1997 2:39:00 PM
From: Maverick	Read Replies (2) of 61433

Hi Sector, WDM stands for wavelength Division Multiplexing. 2 fiberscome together at a prism (a diffraction grating), each w/ a different energies in different bands, then combined onto a single shared fiber for transmission to a destination, where thay are split again. The coupler is a star, with light from every input fiber illuminating the star. Although spreading energy over n outputs dilutes it by a factor of n, such systems are practical for hundreds of channels. IBM first came out w/ a WDM switch, now NT. LU has been working on the WDM tech, but no product yet. LU also worked on an optical computer for a decade now. There is still a lot of single fiber networks for which ASND can make money. MCI is one of the very few, who have multi-fiber network. WDM is mainly an optical switch which neither CSCO, COMS, BAY, nor ASND have any expertise in.

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