Abstract
For long reach passive optical networks, double-sideband intensity modulation and direct detection can offer the advantages of low cost and low complexity. In this paper, we investigate a joint chromatic dispersion (CD) and nonlinearity compensation technique using super-Nyquist image-induced aliasing and a Volterra series-based simplified nonlinear equalizer (SNE) in a decision feedback manner. The SNE employed in our experiments offers signal-to-noise ratio (SNR) performance comparable to the conventional nonlinear equalizers (NE), but with much fewer coefficients. The distribution of the nonlinear coefficients and the memory length of the SNE/NE are also investigated. Experimental results show that with the proposed aliasing-based CD compensation technique combined with SNE used in each down-sampled signal before per-subcarrier maximum ratio combining, the SNR can be significantly improved. The data rate of the 10-GHz optical OFDM signals is increased by 45%, 52%, and 51% after 48.8, 79.2, and 99.6 km of standard single mode fiber transmission, respectively, compared with those without CD/nonlinearity compensation.
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription