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We propose exploiting intermodal four-wave mixing for energy-scalable tuneable fiber lasers, hitherto restricted to low powers, constrained by dispersion-tailoring limitations in PCFs. Conversion over an octave, at mJ-energy-levels, appears feasible.
Recent demonstrations of anomalous dispersion in the visible and NIR wavelengths with conventional all-silica fibers, previously considered feasible primarily with small-Aeff microstructured fibers, has opened the door to a variety of linear and nonlinear applications.
Ring-assisted fibers suppress unwanted modes, improving the tradeoff that limits bend loss. Fabricated fibers achieve low bend loss and compatibility with standard fibers required for fiber to the home.
We review the performance and applications of a recently demonstrated platform that utilises higher-order modes in few-moded fibers that achieves robust, bend-resistant, long-length light-propagation in ultra-large modal areas.
We use switchable fiber-gratings in higher-order-mode fibers to demonstrate a wavelength-continuous adjustable dispersion-compensator (tuning range ~ 435 ps/nm) that is broadband (30 nm) and low loss (average ~ 3.7 dB). 40 Gb/s transmission tests reveal penalty-free operation
We demonstrate a low loss higher-order-mode dispersion compensator that enables practical implementation of lumped or multi-span dispersion compensation schemes. The connector-to-connector module loss is 3.16 dB, and yields -886 ps/nm of dispersion, corresponding to compensation of 200 km of NZDSF.
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