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[摘要]：Fiber optical applications are primarily limited by group-velocity dispersion. In single-mode fibers, material and waveguide dispersion yield a total chromatic dispersion where no modal influences occur. However, modal dispersion plays a significant role in multimode fibers, whereas waveguide dispersion is negligible. The concern of this report is the investigation of the dispersion properties of photonic crystal fibers, with both single-mode and multimode operation, using a time-frequency domain white-light Mach-Zehnder interferometer. The results demonstrate the possibility to separate different transverse fiber modes and, hence, to measure the material, waveguide, and modal dispersion of optical fibers. (C) 2011 Optical Society of America |
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