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Recently there has been much interest in using transmit beamforming to provide multi-antenna physical-layer multicasting. A state of the art in this context is the semidefinite relaxation (SDR) method for handling the design optimization. This paper proposes an alternative multicast transmit strategy where the transmit beams are random and time-varying. This proposed strategy consists of two key ingredients:...
We demonstrate a method enabling the use of phase modulated pumps for 9-fold multicasting of 50 Gb/s RZ-DPSK signals. Phase modulation of the input signal along with the pumps allows for self-seeded multicasting with ~1.8 dB average power penalty.
We experimentally demonstrate 8-fold multicasting of a 100 Gb/s polarization-multiplexed RZOOK data signal to 200 GHz spaced copies using a highly nonlinear fiber. Degenerate four-wave mixing in a bi-directional wavelength conversion scheme is employed. An average power penalty of ~4 dB at a bit error ratio of 10-9 is observed with over 45 nm of wavelength conversion bandwidth.
We experimentally demonstrate multiplexing of two 160-Gbit/s WDM signals to one 320-Gbit/s signal based on supercontinuum generation in a highly nonlinear fiber. Error free operation was achieved after demultiplexing the 320-Gbit/s signal to 10-Gbit/s and less than 3 dB penalty was observed.
We demonstrate simultaneous all-optical half-adder, half-subtracter and AND/OR-functions at 160 Gbit/s. The various functions are produced in a PPLN waveguide through pump depletion as well as sum and difference frequency generation.
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