For a cylindrical dual mode optical fiber, dispersion characteristics of the high order polarization modes, TE01, TM01, and HE21, have been rigorously analyzed by solving the vectorial Maxwell equations numerically. The effects of the inner cladding index structure on the dispersion characteristics of the polarization modes are reported for the first time. In the matched cladding, the difference in chromatic dispersion, dispersion slope and modal delay among the polarization modes are found to increase for waveguide conditions optimized for a large negative dispersion. A new design of a cylindrical dual mode fiber with a depressed inner cladding that can intrinsically reduce the polarization dependence in the dispersion characteristics to improve the performance in dispersion compensation is proposed.
Bibliographical noteFunding Information:
The authors express their gratitude to Prof. B.Y. Kim, KAIST for his encouragement, Prof. G.H. Song, and Prof. Y. Chung for their helpful discussions. This research has been partly supported by ERC program in K-JIST.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering