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Photonics: Design, Technology, and Packaging III
We demonstrate a method of local spectral enhancement of an ultrafast soliton pulse. We use an in-line acoustic longperiod grating (LPG), a periodic structure modifying both the phase and the loss of the propagating light, and which is readily tuned by simple adjustment of an applied electrical signal. The soliton perturbed by this narrow-band filter evolves with nonlinear propagation into an intense localised spectral peak. Our setup consists of creation of a red-shifted optical soliton bydoi:10.1117/12.761405 fatcat:56qpovo6kzaynby52rnlmxcx7q