Explicit finite difference solution of the power flow equation in W-type optical fibers

Using the power flow equation, we have calculated spatial transients of power distribution and a steady-state distribution that are due to coupling of guided to leaky modes in W-type optical fibers (doubly clad fibers). A numerical solution has been obtained by the explicit finite difference method. Results show that power distribution in W-type optical fibers depends on both the intermediate layer width and the coupling strength. W-shaped index profile of optical fibers is effective in reducing modal dispersion and therefore in improving the fiber bandwidth. We have also shown that explicit finite difference method is effective and accurate for solving the power flow equation in W-type optical fibers.

[1]  Y. Koike,et al.  Index profile design for high-bandwidth W-shaped plastic optical fiber , 2006, Journal of Lightwave Technology.

[2]  D. Gloge,et al.  Optical power flow in multimode fibers , 1972 .

[3]  F.S. Choa,et al.  Demonstration of 10-Gb/s transmissions over a 1.5-km-long multimode fiber using equalization techniques , 2002, IEEE Photonics Technology Letters.

[4]  I. White,et al.  Subcarrier modulated transmission of 2.5 Gb/s over 300 m of 62.5-μm-core diameter multimode fiber , 2002, IEEE Photonics Technology Letters.

[5]  J P Pocholle,et al.  Propagation model for long step-index optical fibers. , 1976, Applied optics.

[6]  K.M. Patel,et al.  Enhanced multimode fiber link performance using a spatially resolved receiver , 2002, IEEE Photonics Technology Letters.

[7]  Olaf Ziemann,et al.  POF - Polymer Optical Fibers for Data Communication , 2002 .

[8]  M. Kagami,et al.  Fabrication of light-induced self-written waveguides with a W-shaped refractive index profile , 2005, Journal of Lightwave Technology.

[10]  T. Tanaka,et al.  Steady-state characteristics of multimode W-type fibers. , 1979, Applied optics.

[11]  L. Jeunhomme,et al.  Numerical Solution of the Coupled-Power Equation in Step-Index Optical Fibers , 1977 .

[12]  Numerical solution of the power flow equation in step-index plastic optical fibers , 2004 .

[13]  Joseba Zubia,et al.  Mode coupling contribution to radiation losses in curvatures for high and low numerical aperture plastic optical fibers , 2002 .

[14]  Y. Koike,et al.  Which is a more serious factor to the bandwidth of GI POF: differential mode attenuation or mode coupling? , 2000, Journal of Lightwave Technology.