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My scan of your reference document raised my interest in the results section where bit rates at room temperature for 850nm structures were the goal for VCSEL. If we are to compare the results of POET''s VCSEL performance the section below copied from the paper indicates current achievable rates. Note that they are described as current world wide record standard. The bar being set at 38 gbit/s. Soon we may know POET results.

'Following this motivation we have developed 850 nm QW-VCSELs optimized to achieve the largest possible bit rate at room temperature. Additionally to the optimizations already applied for the 980 nm QW-VCSELs described in the previous chapter, thicker QWs havebeen utilized to increase the optical confinement factor and the number of the top DBR pairswas reduced to decrease the damping and to increase the differential efficiency and the outputpower. These optimization steps have lead to worldwide first 850 nm VCSELs operating error-free at the bit rate of 38 Gbit/s at room temperature. These were also first of any oxide-confined VCSELs operating at such high bit rates. At the elevated temperature of 85 °C error-free transmission at 25 Gbit/s has been measured, repeating the worldwide record value measured few months earlier [55].'

With Regards,

sulasailor