The development of highly dispersive lower and higher order cladding modes and their degeneration with respect to the fundamental core mode in a bent photonic crystal fiber is rigorously studied by use of the full-vectorial finite element method. It is shown that changes in the bending radius can modify the modal properties of large-area photonic crystal fibers, important for a number of potential practical applications.
© 2009 Optical Society of America
Original Manuscript: June 16, 2009
Revised Manuscript: September 16, 2009
Manuscript Accepted: October 12, 2009
Published: October 23, 2009
B. M. Azizur Rahman, Namassivayane Kejalakshmy, Muhammad Uthman, Arti Agrawal, Tiparatana Wongcharoen, and Kenneth T. V. Grattan, "Mode degeneration in bent photonic crystal fiber study by using the finite element method," Appl. Opt. 48, G131-G138 (2009)