Abstract
Nonlinear pulse evolution is studied for a fiber with normal dispersion (ND) and gain. Numerical simulations show that under certain conditions the pulse evolves into a parabolic shape, which has been shown to reduce optical wave breaking. Much as with the square pulse that forms in passive fibers with ND, the interplay of ND and self-phase modulation creates a highly linear chirp, which can be efficiently compressed. Application to an amplifying fiber/grating (prism) pair pulse compressor is considered, with an experimental demonstration of compression from 350 to 77 fs at a gain of 18 dB in an erbium-doped fiber amplifier.
| Original language | English |
|---|---|
| Pages (from-to) | 68-70 |
| Number of pages | 3 |
| Journal | Optics Letters |
| Volume | 21 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1996 Jan 1 |