Title :
Adiabatic soliton compression of gain-switched DFB-LD pulse by distributed fiber Raman amplification
Author :
Iwatsuki, Katsumi ; Suzuki, Ken-Ichi ; Nishi, Shigendo
Author_Institution :
NTT Transmission Syst. Labs., Kanagawa, Japan
Abstract :
Using a dispersion-shifted single-mode fiber pumped by laser diodes as a distributed fiber Raman amplifier, the authors adiabatically compressed transform-limited (TL) pulses generated by a gain-switched distributed-feedback laser diode followed by linear compression and a spectral window. The initial TL pulses were successfully compressed asymptotically to almost pure solitons as short as 3.6 ps at the 2.4 dB total gain of a distributed fiber Raman amplifier, even without using solitons as the initial pulses. The experimental results are well supported by numerical calculations made with the beam propagation method.<>
Keywords :
Raman lasers; fibre lasers; high-speed optical techniques; optical dispersion; optical pumping; solitons; 2.4 dB; 3.6 ps; DFB-LD pulse; adiabatically compressed; beam propagation method; dispersion-shifted single-mode fiber; distributed fiber Raman amplification; distributed fiber Raman amplifier; distributed-feedback; gain-switched; initial pulses; laser diodes; linear compression; nonlinear optics; optical communication equipment; pure solitons; soliton compression; spectral window; transform-limited; Chirp; Optical feedback; Optical propagation; Optical pulse generation; Optical pulse shaping; Optical pulses; Optical solitons; Pulse amplifiers; Pulse compression methods; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
