A.Directly modulated light source

B.EA electroabsorption modulation light source

C.NZ (Mach-Zehnder) modulated light source

D.PDM-QPSK modulated light source

A.Adopt advanced modulation and coding technology to reduce baud rate and improve OSNR tolerance.

B.Use low noise figure NF high-performance EDFA and Raman amplifier board, such as TN13OAU106 or TRAU106, to improve the receiving OSNR of the system.

C.Use the coherent reception where the local oscillator laser of the same frequency interferes with the received optical signal to improve the OSNR tolerance.

D.Adopt enhanced HEC error correction coding, which is nearly 1dB OSNR higher than AFEC.

A.30.12

B.15.24

C.30.24

D.15.12

A.True

B.False