Manipulating free spectral range shift in integrated photonic mach-zehnder interferometers

Abstract

A Mach-Zehnder interferometer includes a first delay arm, a second delay arm, a first phase shifter, a second phase shifter, a third phase shifter, an input optical coupler connected to the first delay arm and the second delay arm, and an output optical coupler connected to the first delay arm and the second delay arm. The first phase shifter is provided on the first delay arm. The second phase shifter is provided on the second delay arm. The third phase shifter is provided on the second delay arm.

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