Optical Channel Capacity Upgrade Based on Multiwavelength Conversion XGM Using Semiconductor Optical Amplifier for Access Networks

This paper demonstrates a 10 Gb/s one-to-two-wavelength conversion configuration based on cross-gain modulation for optical access networks using a single TW-SOA. The method is capable of converting a signal data of specific wavelength 1541 nm to certain wavelengths of CW’s laser 1554 nm and 1558 nm with 4 nm spacing. The pump power level was classified due to channel response. A result obtained was the best power level offering wavelength converter between −6 and 3 dBm. The conversion efficiency achievement provided an acceptable result for probe signals. The findings of Q-factor performance were investigated. The Q values were found to be more than 9 for point to point transmission and 20 km fiber configurations for the original and converted signal. The technique implemented at 20 km and the power of all channels were adequate to provide a splitting ratio of 1/64 for the launched pump power 3 dBm

Semiconductor Optical Amplifier for Optical Channel Capacity Improvement Based on Cross-Phase Modulation

A tremendous increasing in telecommunication networks proportional to the variety and growth of data exchange services resulted in a diversity of configuration limitation in access networks. This paper presents one of nonlinearity behaviour of semiconductor optical amplifier identified as cross gain modulation that allows copying the same data from one wavelength to many wavelengths, which leads to increase the number of access points at same speed. 10 Gb/s One to two cross phase modulation wavelength conversion is discussed using semiconductor optical amplifier Mach–Zehnder interferometer at optical network unit with 64 splitting ratios. The configuration can convert a modulated signal of specific pump wavelength to continuous wavelength 1556 nm and 1558 nm (probes’ wavelength) with two nm spacing to reduce fourwave mixing effect. The influence of data format on the system performance verified that the system able to implement for different data format regarding power levels of pump and probes, interesting the return to zero formats give better performance than non-return to zero. Another important finding was that the possibility of up and down conversion. The outcomes of conversion efficiency are in agreement with the literature and obtained good values for up and down conversion