For different depth and width of the intermediate layer, a power flow equation is used to calculate spatial transients and steady state of power distribution in W-type optical fibers (doubly clad fibers with three layers). A numerical solution has been obtained by the explicit finite difference method. Results show how the power distribution in W-type optical fibers varies with the depth of the intermediate layer for different values of intermediate layer width and coupling strength. We have found that with increasing depth of the intermediate layer, the fiber length at which the steady-state distribution is achieved increases. Such characterization of these fibers is consistent with their manifested effectiveness in reducing modal dispersion and improving bandwidth.
© 2012 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: March 30, 2012
Revised Manuscript: May 24, 2012
Manuscript Accepted: May 29, 2012
Published: July 9, 2012
Ana Simović, Alexandar Djordjevich, and Svetislav Savović, "Influence of depth of intermediate layer on optical power distribution in W-type optical fibers," Appl. Opt. 51, 4896-4901 (2012)