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Why is 10GE so slow (at being adopted)?

Extract from Finisar proposal to 8GFC Fibre Channel
(http://http://www.sfpcables.com/) :
Practical 10G VCSELs to date have been small aperture MM devices.
– Yield VERY poorly even to largest allowed spectral width
– This is largest single cost driver for 10GBASE-SR
Practical TX design almost impossible. Requires high ER and expensive yielding and
testing
The market requirement to have 10GE support 300 meters and the rush to get 10GE out in
2001/2002 lead to problems in manufacturing and test.
• Some vendors have solved manufacturing problems
• All vendors have problems with testing and yielding to the specification
• 8GFC PHY is avoiding these pitfalls and is expected to be 4X cheaper than 10GE

SFP-H10GB-ACU10M

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