DefinePK

Abstract

We have investigated the carrier less amplitude phase (CAP) modulation format at different data streams for access network and simulated by using VPI software. The CAP signals with 1.25 Gbps and 2.5 Gbps are successfully transmitted over 20 km of single-mode fiber (SMF) with 1550 nm SM-VCSELs. The 3.79 b/s/Hz and 7.58 b/s/Hz of spectral efficiency are reported for 2D-CAP of 1.25 Gb/s and 2.5 Gb/s. The receiver sensitivity at FEC limit for B2B of both 1.25 Gbps and 2.5 Gbps is -18.3 dBm and -16.2 dBm, with the difference of 2.1 dB have been observed. After 20 km of transmission, a 2.5 dB difference was detected at the forward error correction (FEC) limit with receiver sensitivity of -18.3 dBm and -15.8 dBm respectively. The result shows that the CAP modulation format has feasibility and potential to deliver high data rate by employing simple baseband electronic design.