OSNR stands for Optical Signal-to-Noise Ratio. It is a measure of the signal quality of an optical link, indicating how much the signal power exceeds the noise power. act - This review work based on the Performance exploration of the bit error rate (BER) and Q-factor. There are so many different types of modulati n techniques scheme is recommended for. Fiber-optic technology is the backbone of modern communication systems, providing fast, secure, and reliable transmission of data over long distances. To evaluate the signal. Essentially, an SFP module acts as a hot-swappable transceiver that converts electrical signals into optical signals and vice versa, enabling fiber-optic communication. Inside, it integrates a laser diode or LED light source, photodetectors, and associated circuitry. When connected to switches. Abstract: In this paper we are doing comparative analysis of WDM system using different modulation formats (NRZ, RZ ) and compensation schemes at different bit rates (10Gbps, 20Gbps and 30Gbps) and wavelength with standard and dispersion compensated fibre and investigate the Q-factor and bit error. quire a very low bit error rate BER down to 10 15 with soft-decision SD forward error correction FEC. There are several performance metrics based on soft infor-mation for systems with SD-FEC, but system budgets are usually described with conv ntional Q-factor converted from pre-FEC BER, based on. In this paper we used post dispersion compensation along with the fiber Bragg grating to reduce the effect of chromatic dispersion.
