The coupling efficiency between two multimode fibers with an angular misalignment is calculated. For the practically interesting cases of parabolic and step-index profiles, closed-form expressions and simple approximations are derived. Furthermore a general loss formula for small tilt angles and arbitrary profile exponents is presented.
© 1983 Optical Society of America
Dieter Opielka and Dieter Rittich, "Transmission loss caused by an angular misalignment between two multimode fibers with arbitrary profile exponents," Appl. Opt. 22, 991-994 (1983)