Optical add/drop multiplexer

Details Optical add/drop multiplexer Optical add/drop multiplexer

1997-10-23

1999-12-14

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359119, 385 24, H04J 1402

Patent

active

060025034

ABSTRACT:
In accordance with the present invention, a WDM communication signal including a service channel is received by an add/drop multiplexer. An optical filter element included in the multiplexer separates a first optical payload channel and the service channel from the WDM signal and outputs these signals on a first output port. The remaining WDM channels exit the optical filter at a second output. By utilizing this add/drop multiplexer to select both an optical channel and a service channel, the total power loss associated with a communications network is significantly less than that obtained from networks having separate components to add/drop an optical payload channel and a service channel.

REFERENCES:
patent: 5532864 (1996-07-01), Alexander et al.
patent: 5760934 (1998-06-01), Sutter et al.
patent: 5812291 (1998-09-01), Bendelli et al.
Giles, C. R., et al.; "Low-Loss Add/Drop Multiplexes for WDM Lightwave Networks"; Proceedings IOOC International Conference on Integrated Optics and Optical Fibre Communication; 1995; pp. 66/67.
Glance, B.; "Wavelength-Tunable Add/Drop Optical Filter"; IEEE Photonics Technology Letters, vol. 8, No. 2; Feb. 1996; pp. 245-247.
Notification of Transmittal of The International Search Report or The Declaration, 7 pages.
DiCon Fiberoptics, Inc., "'96-'97 Product Catalog," Nov. 1996, Cover page and pp. 25-26 (Narrowband Filter WDM).

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