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Tandem Mach-Zehnder Based Directional Coupler to Enhance Signal-to-Noise Ratio of Optical Coherence Tomography

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Abstract

A tandem Mach-Zehnder directional coupler (MZDC) demonstrates maximally flat wavelength-insensitive optical power divider compared with directional coupler and MZDC. Its 100-nm wavelength response could enhance the signal-to-noise ratio of optical coherence tomography up to 24-dB.

© 2020 The Author(s)

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