Abstract
Frequency tuning of a Stokes wave for stimulated four-photon mixing in an elliptical-core fiber is achieved by changing the magnitude of the stress-induced birefringence that is due to the relaxation of residual stress controlled by temperature. As the birefringence is decreased by heating the fiber to 700° C, the frequency shift of the Stokes wave is decreased by about 80 cm−1 for a pump wavelength of 1.064 μm. This result is in agreement with the theoretical prediction.
© 1985 Optical Society of America
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