Optical switching matrix

Details Optical switching matrix Optical switching matrix

1995-08-23

1996-10-29

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359134, 359160, 359179, 385 17, H04J 1400, H04B 1020

Patent

active

055702180

ABSTRACT:
In an optical switching matrix, a common waveguide and a plurality of individual waveguides are connected by a selector that connects the common waveguide to a selected individual waveguide. The individual waveguides are doped and light from a pump is injected into the common waveguide towards the selector. The selector selectively transmits this light to the selected individual waveguide. The resulting amplification in this waveguide reduces crosstalk. One application of these optical switching matrices is in fiber optic telecommunication networks.

REFERENCES:
patent: 4778238 (1988-10-01), Hicks
patent: 5355248 (1994-10-01), Hadjifotiou
patent: 5392377 (1995-02-01), Auracher
Photonic Switching II, Proceedings Of The International Topical Meeting, vol. 29, 12-14 Apr., 1990, Kobe, Japan, pp. 122-125, XP 000333141, Y. Sato et al, "An Erbium-Doped Fiber Active Switch Controlled by Coded Pump Light".
Patent Abstracts Of Japan, vol. 18, No. 447 (E-1594), 19 Aug. 1994 & JP-A-06 140702 (Fujitsu) "Optical Amplification star-coupler".

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