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We report carrier-envelope offset beat detection (52-dB signal-to-noise ratio at 100-kHz resolution bandwidth) with a common-path 2f-to-3f self-referencing interferometer with a dual-pitch periodically poled lithium niobate ridge waveguide.
The first demonstration of a four-port integrated polarizing beam splitter is reported. The device was fabricated on a silicon-on-insulator platform and exhibits crosstalk level < −10dB over a 150nm bandwidth.
We experimentally demonstrate a continuously-tunable quasi-THz RF-photonic phase shifter based on a dual-phase-shifted waveguide Bragg grating on silicon. Phase shifts up to ∼90°are demonstrated over the 16–20 GHz band, constrained only by instrumentation limitations.
A dispersion-flattened microresonator based on slot waveguide exhibits great performance improvement of Kerr frequency combs by engineering the 2nd-order dispersion amount and anomalous-dispersion bandwidth with all-order dispersion taken into account.
We investigate experimentally and theoretically the role of higher-order-dispersion on the bandwidth of microresonator-based parametric frequency combs. Our results demonstrate that fourth-order dispersion plays a critical role in determining the spectral bandwidth.
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