Temperature insensitive mach-zehnder interferometers and...

Details Temperature insensitive mach-zehnder interferometers and... Temperature insensitive mach-zehnder interferometers and...

G - Physics

02

F

G02F 1/225 (2006.01) G01B 9/02 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2354752

A Mach-Zehnder interferometer having two optical couplers interconnected by two optical fibers at least one of which is temperature insensitive. In use, temperature induced changes in the geometrical length and refractive index of the temperature insensitive fibers offset each other so that the optical path length of the fiber is unaffected by the temperature change. Where two temperature insensitive fibers are included these may be of the same or of different lengths. The interferometer may be used in a Dense Wavelength Division Multiplex system.

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