Acta Optica Sinica, Volume. 19, Issue 7, 865(1999)
Accurate Measurement of Zero-Dispersion Wavelength in an Optical Fiber
A novel method which can directly measure the zero-dispersion wavelength of a single-mode fiber is presented. It consists of copropagating a train of pump pulse with a cw light in an optical fiber. The pump wavelength is located at the normal-dispersion regime of the fiber while the cw wavelength is tunable. The interplay between cross-phase modulation and group-velocity dispersion results in intensity modulation on the cw light which can evolve into a train of bright or dark pulses depending on whether its wavelength is tuned into the anomalous- or normal-dispersion regime of the fiber. If neither bright nor dark pulses are generated, then the cw wavelength must be near the zero-dispersion wavelength of the fiber. By using this simple method, the zero-dispersion wavelength of a 0.98 km dispersion-shifted fiber have successfully been measured with a wavelength accuracy of ~0.5 nm.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Accurate Measurement of Zero-Dispersion Wavelength in an Optical Fiber[J]. Acta Optica Sinica, 1999, 19(7): 865