Dispersion compensation module for 100 Gbit/s optical system and beyond

Here we present a chromatic dispersion compensation module (DCM) which can achieve fourth-order dispersion compensation. This module is comprised of four dispersion compensation fiber (DCF) segments and we only need to adjust their lengths to compensate manufacturing fluctuations of transmission fiber. Simulation results show that the residual dispersion (RD) in the C-band (1530–1565 nm) is less than ±0.4 ps/nm for 100-km G652 compensation and is only ±10 ps/nm for 2000-km transmission system, which indicates that the proposed DCM can support 100 Gbit/s non-return-to-zero (NRZ) transmission system without any tunable dispersion compensator (TDC).

Research highlights
► Proposed dispersion compensation module (DCM) achieved a fourth-order dispersion compensation.
► The under-compensation fiber having RDS fluctuation can be compensated using the proposed DCM.
► Residual dispersion was compensated in 0.4 ps/nm of 100-km G652 and 10 ps/nm of 2000-km optical system.
► The proposed DCM employed as in-line DCF can support 100 Gbit/s optical transmission system.