Optical fiber mach-zehnder interferometer fabricated with...

Details Optical fiber mach-zehnder interferometer fabricated with... Optical fiber mach-zehnder interferometer fabricated with...

G - Physics

02

F

G02F 1/225 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2283361

An asymmetric optical fiber Mach-Zehnder interferometer has first and second optical fibers connected at a first coupling region and a second coupling region. The first and second optical fibers form two interfering arms between the first and second coupling regions. To form the asymmetry, the propagation constant in a portion of the first optical fiber in one of the coupling regions differs from the propagation constant in a portion of the second optical fiber in that coupling region. The asymmetric structure provides 30 dB isolation over a greater wavelength span.

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