Abstract
Gigabit transmission systems have traditionally been installed by telecommunication system providers using cooled Distributed Feedback (DFB) lasers.1 This approach minimizes the effects of fiber dispersion, but the laser source is expensive to manufacture. However, gigabit transmission is now demanded by the computing community, where the high cost of a DFB laser would be prohibitive. Moreover, to compound the difficulty of the task, computer-to-eomputer links are required to have a very low bit error rate; 10-12-10-15 is a common requirement of the computer standards community, e.g., ANSI X3T9.3 Fibre channel, Serial-HIPFI. This contrasts with the 10-9-10-10 normally stated by the telecommunication system providers.
© 1993 Optical Society of America
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