This part of IEC 60793 establishes uniform requirements for measuring the numerical aperture of optical fibre@ thereby assisting in the inspection of fibres and cables for commercial purposes.The numerical aperture (NA) of category A1 graded-index multimode fibre is an important parameter that describes a fibre??light-gathering ability. It is used to predict launching efficiency@ joint loss at splices@ and micro/macrobending performance.
TSB-176-2009由TIA - Telecommunications Industry Association 发布于 2009-04-01,并于 2014-06-06 实施。
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