Fibre-Grating Pulse Compressor

• Compressions of between about x30 and x100 are normal

Compressed

pulse

Single mode

optical fibre

Diffraction

grating pair

• Single mode fibre used to provide self-phase-modulation (SPM)

• The spectrally broadened pulse is dispersed by the fibre

• A linear frequency chirp develops in the pulse

• A pair of diffraction grating are used to compress the pulse in time

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