Wavelength Tuning Free Transceiver Module in OLT Downstream Multicasting    Gb/s TWDM-PON System

Figure 3

TWDM PON wavelength router architectures using (a) tunable laser source (TLS) OLT module, (b) AOPR WTF OLT module using wavelength selected switch (AOPR-WSS module) using fixed laser source (FLS), and (c) AOPR WTF OLT module broadcasting and multicasting (AOPR-B&M module).

(a)

(b)

(c)