Nonlinear single-mode fiber coupler using liquid crystals

Goldburt, E. S.; Russell, P. St. J.
February 1985
Applied Physics Letters;2/15/1985, Vol. 46 Issue 4, p338
Academic Journal
The operation of a new nonlinear optical waveguide coupler, fabricated in single-mode fibers and using a liquid crystal as the nonlinear medium, is described. Strongly intensity-dependent coupling and associated bistability are observed to occur in the intensities of the light in the uncoupled and coupled fibers, plotted as a function of the intensity in the input fiber. The effects of applying a dc electric field are also reported. Criteria for the development of liquid crystals suitable for the construction of various types of nonlinear optical devices in single-mode optical fibers are proposed.


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