  Pulse self-compression followed by the generation of resonant radiation is a
well known phenomenon in non-linear optics. Resonant radiation is important as
it allows for efficient and tunable wavelength conversion. We vary the chirp of
the initial pulse and find in simulations and experiments that a small positive
chirp enhances the pulse compression and strongly increases the generation of
resonant radiation. This result corroborates previously published simulation
results indicating an improved degree of pulse compression for a small positive
chirp [1]. It also demonstrates how pulse evolution can be studied without
cutting back the fiber.
