Abstract
We report the first demonstration of polarisation insensitive all-optical wavelength conversion (AOWC) for single wavelength channel 640 Gbit/s return-to-zero differential-phase-shift-keying (RZ-DPSK) signal and 1.28 Tbit/s polarisation multiplexed (Pol-Mux) RZ-DPSK signals using a 100-m polarisation-maintaining highly nonlinear fiber (PM-HNLF) in a polarisation diversity loop configuration. The AOWC is based on four-wave mixing in PM-HNLF. Error free performance is achieved for the wavelength converted signals. Less than 0.5 dB polarisation sensitivity is obtained.
Highlights
The concept of 1 Tbit/s Ethernet envisioned to carry the future Internet traffic has been proposed recently [1], spurred on by the continuous growth of the Internet
We report the first demonstration of polarisation insensitive alloptical wavelength conversion (AOWC) for single wavelength channel 640 Gbit/s return-to-zero differential-phase-shift-keying (RZ-DPSK) signal and 1.28 Tbit/s polarisation multiplexed (Pol-Mux) RZ-DPSK signals using a 100-m polarisation-maintaining highly nonlinear fiber (PM-highly nonlinear fibers (HNLF)) in a polarisation diversity loop configuration
We report the first demonstration of polarisation insensitive AOWC for a 640 Gbit/s return-to-zero differential-phase-shift-keying (RZ-DPSK) signal and a 1.28 Tbit/s polarisation multiplexed (Pol-Mux) RZ-DPSK signal, using a 100-m polarisation-maintaining HNLF (PM-HNLF) in a polarisation diversity loop configuration
Summary
The concept of 1 Tbit/s Ethernet envisioned to carry the future Internet traffic has been proposed recently [1], spurred on by the continuous growth of the Internet. All-optical signal processing techniques based on optical time division multiplexing (OTDM) have shown the potential for high-speed signal processing on 640 Gbit/s and beyond [3,4,5,6]. The AOWC using a SOA has been demonstrated up to 320 Gbit/s, based on a filtered cross phase modulation (XPM) induced chirp [7]. Polarisation insensitive 320 Gbit/s AOWC based on a Ti:PPLN waveguide has been demonstrated using the polarisation diversity scheme [8]. We report the first demonstration of polarisation insensitive AOWC for a 640 Gbit/s return-to-zero differential-phase-shift-keying (RZ-DPSK) signal and a 1.28 Tbit/s polarisation multiplexed (Pol-Mux) RZ-DPSK signal, using a 100-m polarisation-maintaining HNLF (PM-HNLF) in a polarisation diversity loop configuration. To the best of our knowledge, this is the highest operation speed of a polarisation insensitive wavelength converter reported to date
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