Characteristics of directional couplers with lapped multimode fibers.
Measurements of characteristics and a theoretical ray-optics analysis were made on directional couplers prepared by connecting a pair of lapped multimode fibers. Various measured characteristics such as branching ratio, excess insertion loss, and mode conversion agreed fairly well with calculated values. From these results a way was found to lessen the excess insertion loss and the branching ratio.
Tanaka
T
T
Serizawa
H
H
Tsujimoto
Y
Y