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Employing 8PSK and 16PSK modulation formats, non-degenerate four-wave mixing (FWM) in a single highly nonlinear fiber (HNLF), and coherent detection, we experimentally demonstrate 40-Gbaud/s (120-Gbit/s) octal and 10-Gbaud/s (40-Gbit/s) hexadecimal simultaneous addition (A+B) and bidirectional subtraction (A-B, B-A).
Optical signal processing techniques employ a wide range of devices and various nonlinearities to achieve multiple network functionalities. The choice of nonlinearity can also impact the relative efficiency, both in terms of energy and material consumption, of the signal processing function being implemented. Techniques for some of the important functionalities, wavelength multicasting, wavelength-division...
We report first experimental demonstration on the non-transparent characteristic of FWM using NRZDPSK, RZ-DPSK, CSRZ-DPSK, and CSRZ signals. One potential non-transparency application of 40 Gbit/s CSRZ-to-RZ format conversion is experimentally demonstrated.
We report the first experimental demonstration on 40 Gbit/s all-optical format conversions from NRZ to CSRZ, from NRZ to RZ, and from NRZ-DPSK to RZ-DPSK by using a periodically poled lithium niobate (PPLN) waveguide.
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