Research ArticleWavelength 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).