title: Coherent ultrashort pulse generation from incoherent light by pulse trapping in birefringent fibers.
abstract: We investigated the nonlinear fiber phenomena of pulse trapping and amplification between incoherent light and an ultrashort soliton pulse in birefringent fibers both experimentally and numerically. Using the phenomena in a 1.4 km-long low-birefringence fiber, a coherent, nearly transform-limited, sech2-shaped, ultrashort pulse was generated from incoherent light from a super-luminescent diode. The average pulse energy and pulse width were 121 pJ and 640 fs, respectively. The estimated gain of this system was as large as 62 dB.
authors.affiliation: Department of Electrical Engineering and Computer Science, Nagoya University, Nagoya, Aichi, Japan. shiraki.eiji@e.mbox.nagoya-u.ac.jp
authors.forename: Eiji
authors.initials: E
authors.lastname: Shiraki
authors.forename: Norihiko
authors.initials: N
authors.lastname: Nishizawa
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D005336:Fiber Optic Technology; D005583:Fourier Analysis; D008027:Light; D049449:Luminescence; D008853:Microscopy / Q000379:methods*; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055100:Optical Fibers; D055095:Optics and Photonics; D013053:Spectrophotometry / Q000379:methods; D013059:Spectrum Analysis, Raman / Q000379:methods; D013997:Time Factors