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This paper presents an overview of a complementary metal–oxide–semiconductor-compatible, programmable, analog optical lattice filter based on silicon unit cells arrayed in large-scale photonic integrated circuits. The unit cell employs a combination of a ring resonator and a Mach–Zehnder interferometer with tunable phase elements in both of the paths. Each proposed unit cell contributes a separately...
We coherently receive a 160-Gb/s QPSK waveform across 80-GHz bandwidth in two 40-GHz-wide spectral slices using a silica planar lightwave circuit capable of 640-GHz measurements which includes two arrayed-waveguide gratings and 16 optical hybrids.
We exploit an in-band, 50-MHz supervisory channel for chromatic dispersion monitoring of variable-bandwidth flexpaths. Results show monitoring optimization tradeoffs and dispersion measurements for a 400-GHz flexpath with up to 100-km link lengths.
Dynamic filter shapes of a silicon photonic lattice filter switching between a notch and bandpass filter are measured at a 16.67 ns interval using a frequency-to-time mapping method and a coherent measurement technique.
We demonstrate optical orthogonal time-frequency domain multiplexing (OTFDM), which inherits the advantages of high-speed OTDM and high-spectral-efficient OFDM. Single-Pol., 2-b/s/Hz, 160-Gb/s OTFDM-QPSK is achieved by optical time-domain processing.
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