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Published January 1, 1979 | public
Journal Article Open

Continuous backward-wave generation by degenerate four-wave mixing in optical fibers


We report on the observation of cw backward-wave generation using degenerate four-wave mixing in a nonresonant medium. The interaction took place inside a 3-m-long CS2-filled 4-µm i.d. optical fiber. With a pump power of only 6 mW inside the fiber, a backward-wave conversion efficiency of 0.45% has been observed, which is in reasonable agreement with theoretical predictions.

Additional Information

© Copyright 1979 Optical Society of America Received August 28, 1978 We wish to acknowledge the efforts of V. Wang of Hughes Research Laboratories for his help in the early stages of this project. We are also grateful to J. Wysocki of Hughes Research Laboratories and P. Kaiser of Bell Laboratories for providing us with various hollow-core fibers. We thank E. P. Ippen for discussion with R. K. Jain on optically induced degradation in CS2-filled fiber. D. Fekete is thankful for the support of the Weizmann Institute. Also, D. M. Pepper wishes to acknowledge the support of the Hughes Aircraft Company. This research was supported by the Air Force Office of Scientific Research. D. Fekete is a Weizmann Institute, Israel, Postdoctoral Fellow. D. M. Pepper is a Hughes Research Laboratories Doctoral Fellow.


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