Table 1. The summarized transmission parameters of the 4-Gbit/s 16-QAM OFDM data carried by blue LD without and with phosphorous diffuser.

	EVM	SNR	BER
Without phosphor	9.3%	21.4 dB	5.5 × 10−7
With phosphor	15.9%	17.6 dB	1.8 × 10−3