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We demonstrate multi-impairment monitoring of 640 Gb/s signals enabled by a broadband photonic-chip-based radio-frequency spectrum analyser. We show simultaneous monitoring of group velocity dispersion, in-band optical signal-to-noise ratio and timing jitter from a single measurement.
We propose chip-based Tbaud processing for all-optical performance monitoring, switching and demultiplexing. We demonstrate the first transmitter optimization and receiver-end demultiplexing of 1.28 Tbit/s OOK signals. Both exploited Kerr nonlinearity in dispersion-engineered As2S3 planar waveguide.
A Geiger-mode avalanche photodiode (GAPD) array-based MRI compatible PET is being developed in our laboratory. The purpose of this study is to develop filtering methods for PET event signals contaminated by RF pulses for simultaneous PET-MR imaging. The detector for the MRI compatible PET was composed of LYSO scintillators coupled with GAPD arrays. PET signal acquisition was implemented by a FPGA-based...
Ultra-broad bandwidth (3.75 THz) RF spectrum analysis of femtosecond optical pulses is reported for the first time, enabled by the use of a short 6 cm length Chalcogenide waveguide designed for high nonlinearity and broadband low dispersion.
An all-optical photonic chip RF spectrum monitor with measurement bandwidth >2.5 THz is reported. Using a 16 cm length, highly nonlinear and broadband low dispersive As2S3 planar rib waveguide, 320 Gb/s optical signals are characterized.
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