Nakamura, Hirotaka 40Gbit/s-class-λ-tunable WDM/TDM-PON using λ-selectable B-Tx and 4 x M cyclic AWG router for flexible photonic aggregation networks. [electronic resource] - Optics express Jan 2013 - 463-8 p. digital Publication Type: Journal Article ISSN: 1094-4087 Standard No.: 10.1364/OE.21.000463 doi