Mohawk, a division of Belden CDT, today released its Multimode Fiber Grade Selector Guide to aid network designers...
December 15, 2004
Mohawk, a division of Belden CDT, today released its Multimode Fiber Grade Selector Guide to aid network designers in preparing for high-bandwidth backbones including 40 Gb/s for the future.
This grading system, in both long (1300nm) and short (850 nm) wavelengths, defines and categorizes the fibers into six categories, based on bandwidth and application support and distances.
Grades 1, 2 & 3 are 62.5/125 fibers. Grade 4 is the “standard” 50/125 (TIA/EIA-568-B.3). Grade 5 is the laser optimized 50/125 (TIA/EIA-568-B.3-1) and Grade 6 is the enhanced laser optimized 50/125 fiber.
“We’ve proven that increased data rates yield a more efficient overall cost of data,” says Mike Connaughton, the company’s fiber optic sales manager.
“Our cost analysis shows that by installing Grade 6 multimode fiber and associated electronics for 10 GbE, the ROI is far better realized than installing singlemode fiber in a campus backbone."
Both Grade 5 and 6 allow maximum bandwidth at the short wavelength, but Grade 6 provides significantly higher bandwidth, which results in additional operating margins that can be used for added cabling distances or added connections for plug and play installations.
Connaughton will be giving a seminar on fiber standards and engineered links next month at the BICSI Winter Conference in Orlando.