Optical waveguide junction

Details Optical waveguide junction Optical waveguide junction

G - Physics

02

B

345/56, 88/97.72

G02B 6/10 (2006.01) G02B 6/12 (2006.01) G02B 6/125 (2006.01) G02B 6/28 (2006.01) G02F 1/313 (2006.01) G02F 1/35 (2006.01)

Patent

CA 1290436

Abstract of the Disclosure 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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