On-Chip, Single-Shot Characterization of GHz-Rate Complex Optical Signals

Abstract

Phase reconstruction based on optical ultrafast differentiation is implemented using an integrated-waveguide Mach-Zehnder interferometer to demonstrate self-referenced phase characterization of gigahertz-rate complex modulated signals (e.g., quadrature phase shift keying and amplitude phase shift keying modulation formats), through a single-shot and realtime technique. This method is transparent to both modulation format and bit rate, limited only by the bandwidth capabilities of the temporal intensity measurement instrumentation.

Perfect secrecy cryptography via mixing of chaotic waves in irreversible time-varying silicon chips

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PROUD-based method for simple real-time in-line characterization of propagation-induced distortions in NRZ data signals

“…In particular, the pass Other solutions have been tested to be used as D+/D-filters in PROUD. Using an unbalanced Mach-Zender interferometer allows flexibility in the filter parameters, but requires a nonstandard component [9], usually with temperature stabilization [10], which increases the complexity of the system. In our case, the use of a commercial DWDM provides a stable and off-the-shelf low cost filter solution.…”