Optical waveguide junction and method of making said junction

Details Optical waveguide junction and method of making said junction Optical waveguide junction and method of making said junction

1984-02-27

1987-07-28

Wise, Robert E.

G02B 626, G02B 642

Patent

active

046828435

ABSTRACT:
An optical waveguide junction which can be used as a wavelength demultiplexer, having two aligned fibers separated from each other by a wavelength-selective filter and a fiber branching off laterally from these fibers at the level of the filter. At the same time, a greater degree of coupling efficiency, applicability in monomode fiber lines, and greater adjusting tolerances in production of the junction are achieved. It is recommended that each of the two aligned fibers have different core diameters, while the fiber feeding the filter has a smaller core diameter than the fiber continuing from the filter. In one embodiment of the invention the feed fiber includes a monomode fiber and the continuing fiber of a multimode. The junction can be used as a demultiplexer for optical-fiber transmission lines for unidirectional operation for demultiplexing.

REFERENCES:
patent: 4339290 (1982-07-01), Winzer et al.
patent: 4440470 (1984-04-01), Khoe
patent: 4456329 (1984-06-01), Henderson et al.
Winzer et al.; "Single-Mode & Multimode . . . Couplers for WDM; Applied Optics; vol. 20, No. 18; 9/15/81; pp. 3128-3133.

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