Paper Title
Analysis Of 40gbps Duobinary Modulation For Different Terrestrial Optical Communication Link

Abstract
This paper presents the simulative analysis of duobinary modulation scheme at the bit rate of 40Gbps for dispersion compensated Amplified Spontaneous Emission (ASE) –noise-limited optical communication link. The link performance analysis has been carried out for different types of commercially available optical fiber: SMF, LEAF, Vascade LEAF, Vascade LS+, Vascade R1000. The investigation presented in the paper helps in selecting the best fiber for long-distance reliable communication. Index Terms- Duobinary, LEAF, SMF, VLEAF, VLS+, VR1000.