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arXiv · 2507.01114

Low-dispersion low free-spectral-range Mach-Zehnder interferometer with long straight path lengths on silicon

Cael Warner
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Abstract

Multiple Mach-Zehnder interferometers are constructed using fiber-Bragg grating couplers, y-branches, silicon waveguides, and/or broadband splitters in silicon on insulator strip waveguides to test the effect of variation in waveguide length between consecutive bends on the transmission gain spectrum, free-spectral range, group refractive index, and dispersion. Dispersion is mitigated by increasing the path length between consecutive bends of minimum radius. With long linear waveguide sections, a free spectral range of 0.41 nm is achieved.

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Cael Warner. 2025-07-01. Low-dispersion low free-spectral-range Mach-Zehnder interferometer with long straight path lengths on silicon. https://arxiv.org/abs/2507.01114

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