This Lightreading article details Finisar’s production plans for GPON components and talks about other players in the market.

"We’re encouraged to do both [OLT and ONT] , by both the service providers and the equipment companies, because there are no Tier 1 optics suppliers today supplying PON products," Rawls says. "But where its mostly attractive for us is at the OLT end, because that’s where value pays off."