Analysis of Dispersion-Managed Optical Fiber Transmission System Using Non-Return-to-Zero Pulse Format and Performance Restriction from Third-Order Dispersion

摘要

We analyze the dispersion-managed optical transmission system for the non-return-to-zero (NRZ) pulse for- mat. First, we investigate the physical image of dispersion man- agement by computing small-signal-based transfer functions, and summarize the dependence of transmission performance on sys- tem parameters. Next, the Q-map is computed numerically to design long-distance large- capacity dispersion-managed transmis- sion systems for a single channel in a more detailed manner. It is shown that the third-order dispersion of fibers negatively influ- ences transmission performance, and third-order dispersion com- pensation is proved to be an effective method for extending the transmission distance of high bit-rate systems. Utilizing these results, guidelines can be derived for the optimal design of long- distance large-capacity NRZ transmission systems.