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Opt Express. 2010 May 24;18(11):11700-6. doi: 10.1364/OE.18.011700.

Wideband spectral compression of wavelength-tunable ultrashort soliton pulse using comb-profile fiber.

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  • 1Division of Advanced Science and Biotechnology, Osaka University, Suita, Osaka 565-0871, Japan.


We demonstrated spectral compression of ultrashort soliton pulses in a wide wavelength region based on an adiabatic soliton spectral compression technique using a comb-profile fiber. The comb-profile fiber was carefully designed using numerical analysis and fabricated using a conventional single-mode fiber and a dispersion-shifted fiber. The spectral width of a 200 fs soliton pulse was compressed from 12 to 15 nm to 0.54-0.71 nm in the wavelength region 1620-1850 nm, giving a spectral compression factor of up to 19.8-25.9. Owing to the soliton effect, the side lobe level was suppressed to -19.2 to -9.7 dB.

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