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The implementation of the all-optical wavelength-conversion (AOWC) function will be a key-feature in next-generation networks, as it could enable dynamic signal routing, wavelength reuse and path protection and restoration. At the same time, the use of differential-quadrature phase-shift-keying (DQPSK) modulation technique in combination with polarization multiplexing (POLMUX) is considered as the...
This paper describes about real-time 100-Gb/s POLMUX RZ-DQPSK transmission, exploiting direct detection and endless automatic polarization stabilization by means of a magneto-optic device. The effectiveness of the proposed solution in presence of chromatic dispersion is experimentally verified by measuring the bit-error rate (BER) after 8.8 km of uncompensated standard single-mode fiber (SSMF). POLMUX...
We present efficient wavelength conversion of a polarization-multiplexed RZ-DQPSK channel through cascading in a lithium niobate waveguide. BER measurements confirm that this is a promising technique for signal processing in high-bit-rate phase-modulated formats.We present efficient wavelength conversion of a polarization-multiplexed RZ-DQPSK channel through cascading in a lithium niobate waveguide...
The reliability of 100-Gb/s polarization-multiplexed return-to-zero differential quadrature phase-shift keying transmission is demonstrated exploiting direct detection and automatic polarization stabilization. We experimentally verified a 2-dB chromatic dispersion tolerance of 100 ps/nm. Long-term stability has also been assessed by sampling the bit-error rate every 3 min over a continuous period...
XPM impairment on PolDM RZ-DQPSK transmission is experimentally investigated over 50 km uncompensated SMF fiber. Measured propagation penalties due to a 50 or 100 GHz spaced RZ-shaped channel at different power and state of polarization are discussed.
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