Multiport optical waveguide interferometer and method of...

Details Multiport optical waveguide interferometer and method of... Multiport optical waveguide interferometer and method of...

G - Physics

02

B

G02B 6/28 (2006.01) G01J 3/00 (2006.01) G01J 3/45 (2006.01) G02B 27/10 (2006.01)

Patent

CA 2128645

A multiport optical waveguide interferometer is provided which comprises at least two NxN couplers arranged in series on an array of fibers and separated by a short region such that the phase shift between the couplers is approximately equal to .pi.. A method for making such interferometer comprises forming such couplers, for instance by a fused taper method with appropriate twist, where the fused, tapered and twisted zone is longer than usual and wherein the couplers are formed in series within such zone, separated by short regions of between 1-2 mm, and adjusted to achieve the flattest possible wavelength response.

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