Soliton-effect optical pulse compressor.

摘要

A transmission-line model of a two-stage all-fiber soliton-effect femtosecond pulse compressor has been designed by the use of comprehensive simulation tools. The theoretically designed compressor is predicted to have compression factors as high as 24, with low peak power (0.5 nJ pulse energy in 180 fs pulse width) and high repetition rate (∼40 GHz) without many of the disadvantages of heretofore-designed compressors.; Prior optical pulse compressors are primarily based on solid-state lasers or fiber Bragg-gratings. Solid-state lasers are large and have high pulse energies (∼10 nJ) and lack the precision needed for many applications, such as medical diagnosis and treatment. Fiber Bragg-grating compressors are limited in attainable compression factors and intensity levels and have restricted use with other fiber Bragg-gratings. Other fiber compressors face third order dispersion, self-steepening, intrapulse stimulated Raman scattering (ISRS) and higher order dispersion, which limits their use.; The suggested design addresses a need for the modeling of a low-loss all-fiber optical pulse compressor that answers the above objections. The designed two-stage all-fiber soliton-effect optical pulse compressor, has no third- or higher-order dispersion, and is not affected by ISRS and self-steepening effects.