Add-drop optical spectrum-division multiplexer

Details Add-drop optical spectrum-division multiplexer Add-drop optical spectrum-division multiplexer

1995-06-02

1997-03-18

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359127, 359128, H04J 1402

Patent

active

056128053

ABSTRACT:
An add-drop optical spectrum-division multiplexer for dropping a drop multiplex from an incoming multiplex signal and for adding an add multiplex into an outgoing multiplex signal. The multiplexer includes a demultiplexing device for separating a number of optical carriers from the incoming multiplex signal and for selecting drop carriers which constitute the drop multiplex as well as through carriers which are to be output as the outgoing multiplex signal. The multiplexer further includes an apparatus for selecting a certain number of add carriers from the total number of carriers of the add multiplex, and a coupling device and wavelength converter for allocating fixed wavelengths to the signals which modulate the through carriers and the add carriers.

REFERENCES:
patent: 5438445 (1995-08-01), Nakano
patent: 5479082 (1995-12-01), Calvani et al.
patent: 5488500 (1996-01-01), Glance
Proceedings IEEE Conference on Computer Communications Infocomm '93., vol. 2, 28 Mar. 1993, pp. 578-585; Kuon-Chun Lee et al, "Routing and Switching in a Wavelength Convertible Optical Network".
Transactions of the Institute of Electronics and Communication Engineers of Japan, Section E, No. 1, Jan. 1991, Tokyo, JP, pp. 84-91; Minoru Akiyama et al, "Photonic Switching System".
Journal of Lightwave Technology, vol. 11, No. 5, May 1993, New York US, pp. 714-732, Stephen B. Alexander et al, "A precompetitive consortium on wide-band all-optical networks".

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