We propose a novel analytical model for the characterization of fiber cross-phase modulation (XPM) in ultrafast all-optical fiber wavelength converters, operating at modulation frequencies higher than 1 THz. The model is used to compare the XPM frequency limitations of a conventional and a highly nonlinear dispersion shifted fiber (HN-DSF) and a bismuth oxide-based fiber, introducing the XPM bandwidth as a design parameter. It is shown that the HN-DSF presents the highest XPM bandwidth, above 1 THz, making it the most appropriate for ultrafast wavelength conversion.
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| http://dx.doi.org/10.1364/ol.31.003408 | DOI Listing |
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Article Synopsis
- Coherent dispersive wave emission plays a key role in soliton dynamics across various nonlinear optics platforms, but generating efficient, ultra-broad bandwidth waves has been challenging due to resonance limitations.
- This study reveals a new approach where the dispersive wave emission process is strongly coupled with the driving pulse's dynamics, leading to high-efficiency coherent dispersive wave generation in the ultraviolet range.
- The process also produces a temporally-delayed ultrashort pulse that overlaps with the dispersive wave, resulting in significant spectrum broadening, which is valuable for applications like time-resolved spectroscopy and ultrafast electron microscopy.
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