Table 1. The injection currents to the SOAs and PMs.

Component	Injection current	Gain
SOA1	0	0
SOA2	25.000 mA	∼3.7 dB
SOA3	21.422 mA	∼2.3 dB
SOA4	21.051 mA	∼2.2 dB
SOA5	17.513 mA	∼0.6 dB
SOA6	17.397 mA	∼0.5 dB
PM1	0	N/A
PM2	2.011 mA	N/A
PM3	0	N/A
PM4	0	N/A
PM5	1.282 mA	N/A
PM6	0.103 mA	N/A

NA, not applicable; PM, phase modulator; SOA, semiconductor optical amplifier.