How about the entire 400g ecosystem is delayed and the tier 1 is continually tweaking and moving the parameters until they come up with a perfect solution? It's like their putting in the quarters and we're doing the dance, we still have the most integrated efficient product that saves money and energy,and so we made the changes ie; the laser meeting their spec, the filters etc. in business, the customer gets to ask for the tune since their paying .

just a little more time, no one is jumping in with a better solution as far as we know

SP