Simple expressions for the coupling between the LP01 and LP11 modes of a two-mode optical fiber with a periodic microbending structure are developed. Implementation of the microbend structure using a flexural acoustic wave is described. The dependences of the acoustic frequency and power requirements on the pertinent fiber parameters are presented.
© 1987 Optical Society of America
Original Manuscript: September 26, 1986
Manuscript Accepted: January 14, 1987
Published: April 1, 1987
J. N. Blake, H. E. Engan, H. J. Shaw, and B. Y. Kim, "Analysis of intermodal coupling in a two-mode fiber with periodic microbends," Opt. Lett. 12, 281-283 (1987)