发明名称 Method for selecting multimode optical fibres
摘要 <p>A multimode optical fiber has a refractive index profile such that a measurement of the dispersion modal delay (DMD), carried out on a DMD graph modified by adding a delay (”t trace ) to each trace: ” �¢ t trace = ” �¢ » max �¢ xDxL �¢ r trace a ² where r trace is the center position of the injection of the light pulse corresponding to the trace, ± is the core radius of the multimode fiber, L is the length of the fiber, D is the chromatic dispersion of the multimode fiber at the wavelength of the light pulse, ² is the coefficient of the delay and ”» max is the maximum spectral width of the source intended to be used with the fiber, produces an equivalent modal dispersion value of less than 0.11 ps/m for (”» max x D) > 0.07 ps/m. The modification of the DMD graph to take account of the chromatic dispersion makes it possible to guarantee a calculated effective bandwidth EBc greater than 6000 MHz-km for multimode fibers used with multimode transverse sources.</p>
申请公布号 EP2144096(B1) 申请公布日期 2016.01.13
申请号 EP20090075278 申请日期 2009.06.29
申请人 DRAKA COMTEQ B.V. 发明人 GHOLAMI, ASGHAR;MOLIN, DENIS;SILLARD, PIERRE;LUMINEAU, YVES
分类号 G02B6/028;G02B6/02 主分类号 G02B6/028
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