Passive Optical Networks

penalty, causing the receiver sensitivity to degrade by 0.9 dB when the PLM

mode was set to Mode 1.

Table 4.7 lists the state-of-the-art G-PON OLT transceiver performance

parameters achievable from a DC-coupled APD with burst-mode TIA and

limiting amplifier chipset for upstream link speed of 1.244 Gbps [85]. For com-

parison, the same table also lists the ITU-T G.984.2 specification requirements.

Two ONUs were measured with an 8-bit reset signal pulse. The achieved OLT

Rx sensitivity of 31.6 dBm and dynamic range of above 26.9 dB were much

better than the G.984.2 specification of 28 dBm (with a 1310/1490 nm WDM)

as shown in Table 4.7.

4.6.2 EPON Transceivers

The EPON specification allows AC-coupled burst-mode OLT transceivers for

simplicity and economic ...