Abstract
In a twin-core optical fiber a propagating light pulse periodically transfers power between its two cores. Experiments by Tjugiarto et al. [Opt. Lett. 17, 1058 (1992)] have demonstrated that this coupling length is considerably reduced when the fiber is also spun. A coupled-mode analysis reveals a pitch resonance that couples a cladding mode with the circularly polarized core mode whose handedness matches that of the helical twist of the cores. This resonance mechanism explains the observation of enhanced coupling and cladding-mode cross coupling.
© 1996 Optical Society of America
Full Article | PDF ArticleMore Like This
T. Tjugiarto, P. L. Chu, and G. D. Peng
Opt. Lett. 17(15) 1058-1060 (1992)
R. P. Salathé, H. Gilgen, and G. Bodmer
Opt. Lett. 21(13) 1006-1008 (1996)
Maciej Napiorkowski and Waclaw Urbanczyk
Opt. Lett. 40(14) 3324-3327 (2015)