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We investigate wavelength conversion by cross-phase modulation in the presence of strong dispersion and two photon absorption in highly nonlinear singlemode As2Se3 fiber, achieving conversion over a span of 30 nm.
Direct-detection differential polarization-phase-shift keying is experimentally demonstrated at 10 Gsymbol/s, in which polarization-phase symbols are differentially decoded by using optical interferometric demodulation and electrical multilevel decision without the need of dynamic polarization control.
3-bit/symbol optical modulation scheme is proposed using dark-return-to-zero (DRZ), differential-phase-shift-keying (DPSK) and polarization-shift-keying (PolSK). Transmission performance of the 3 times10 Gb/s signal is investigated.
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.
We investigate optimal dispersion maps for 40 Gbit/s DWDM systems based on return-to-zero differential phase-shift-keying modulated channels. Accumulating the dispersion compensation in 150 km G.652 units leads to a small transmission penalty of less than 0.5 dB.
In recent years, many advances have been made in increasing the efficiency of Lithium Niobate modulators and switches. This tutorial will present an overview of these devices and their contributions towards improving various fiber optic systems.
We have experimentally demonstrated 8 times 10 Gbit/s modified duo-binary RZ (MD-RZ) signal repeaterless transmission over a record length of 240 km standard fibre (SMF-28). A Raman amplifier was used to enhance the OSNR and extend the repeaterless transmission distance with low receiver penalty.
Experimental data is presented on the performance of high saturation power SOAs with 43 Gb/s NRZ and DPSK signals. Up to 8 SOAs are concatenated demonstrating that only DPSK leads to error-free performance.
Techniques for generation and detection of optical minimum-shift keying signals are presented. The property of optical MSK and expected performance in high speed optical transmission system are discussed.
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