Abstract

The Raman time constant (T_R) used in the generalized nonlinear Schrdinger equation is determined experimentally at 1550 nm based on the Raman self-frequency shift in a standard single-mode fiber. The effective value of the T_R as measured is found to be 3.0 fs. Detailed error analysis shows that the uncertainty in the measurement is less than {\pm}1.0 fs. The measured value of the T_R is approximately half of what is commonly used at present in theoretical simulations. Determined experimentally in this work the accurate value of T_R = 3.0 fs is essential in modeling pulse propagation in optical fibers.

[IEEE ]

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