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RESEARCH PRODUCT
Ultra-flat SPM-broadened spectra in a highly nonlinear fiber using parabolic pulses formed in a fiber Bragg grating
David J. RichardsonFrancesca ParmigianiChristophe FinotPeriklis PetropoulosKazunori MukasaMorten IbsenMichael A. F. Roelenssubject
Femtosecond pulse shapingPHOSFOSMaterials sciencebusiness.industryPhysics::Optics02 engineering and technology01 natural sciencesPulse shapingGraded-index fiberAtomic and Molecular Physics and Optics010309 optics020210 optoelectronics & photonicsOpticsFiber Bragg grating0103 physical sciences0202 electrical engineering electronic engineering information engineeringOptoelectronicsbusinessSelf-phase modulationBandwidth-limited pulsePhotonic-crystal fiberdescription
International audience; We propose a new method for generating flat self-phase modulation (SPM)-broadened spectra based on seeding a highly nonlinear fiber (HNLF) with chirp-free parabolic pulses generated using linear pulse shaping in a superstructured fiber Bragg grating (SSFBG). We show that the use of grating reshaped parabolic pulses allows substantially better performance in terms of the extent of SPM-based spectral broadening and flatness relative to conventional hyperbolic secant (sech) pulses. We demonstrate both numerically and experimentally the generation of SPMbroadened pulses centred at 1542nm with 92% of the pulse energy remaining within the 29nm 3dB spectral bandwidth. Applications in spectral slicing and pulse compression are demonstrated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-08-21 |