TY - JFULL AU - S. Al-Sowayan and K. L. Lear PY - 2013/8/ TI - A New Approach Defining Angular DMD Using Near Field Aperturing T2 - International Journal of Electrical and Computer Engineering SP - 924 EP - 927 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/16477 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 79, 2013 N2 - A new technique to quantify the differential mode delay (DMD) in multimode fiber (MMF) is been presented. The technique measures DMD based on angular launch and measurements of the difference in modal delay using variable apertures at the fiber face. The result of the angular spatial filtering revealed less excitation of higher order modes when the laser beam is filtered at higher angles. This result would indicate that DMD profiles would experience a data pattern dependency. ER -