The manner in which the differential mode delay (DMD) pulse response is affected by ellipticity- and micro-bending-induced mode coupling has been analyzed numerically. We have considered both a fiber profile containing a central index dip and fiber profiles with sinusoidal ripples. We find that slowly varying profile components can be correctly estimated from DMD results even in the presence of substantial mode coupling.
© 1983 Optical Society of America
Bjorn Stoltz and David Yevick, "Influence of mode coupling on differential mode delay," Appl. Opt. 22, 2349-2355 (1983)