Optical wavegide junction

Details Optical wavegide junction Optical wavegide junction

1988-01-25

1989-07-11

Sikes, William L.

350 9613, G02B 610

Patent

active

048465402

ABSTRACT:
An optical waveguide junction including a multimode input waveguide and a plurality of n spaced apart output waveguides, disposed on a substrate. Each of the output waveguides has a different propagation constant, (e.g., by having different widths or indices of refraction), so that the input modes of optical radiation are sorted in a predetermined way into n groups of output modes corresponding to the n output waveguides. If the input waveguide is excited with optical radiation of different wavelengths, the output waveguides may be tailored with specific widths and indices of refraction to sort the input radiation into the n output waveguides as a function of wavelength, thereby demultiplexing the input optical signal. More generally, the junction may also be utilized with m input waveguides and n output waveguides to implement routing, switching, modulation, and wavelength multiplexing/demultiplexing.

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"Synthesis and Characterization of TiO.sub.2 -Nb.sub.2 O.sub.5 Borosilicate Glasses for Nonlinear Optical Waveguides", Mat. Res. Soc. Sym. Proc., E. M. Vogel et al, 1987, vol. 88, pp. 101-105.

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