Abstract
We propose and numerically demonstrate a novel simple method to produce optical Nyquist pulses based on pulse shaping in a passively mode-locked fiber laser with an in-cavity flat-top spectral filter. The proposed scheme takes advantage of the nonlinear in-cavity dynamics of the laser and offers the possibility to generate high-quality sinc-shaped pulses with widely tunable bandwidth directly from the laser oscillator. We also show that the use of a filter with a corrective convex profile relaxes the need for large nonlinear phase accumulation in the cavity by offsetting the concavity of the nonlinearly broadened pulse spectrum.
| Original language | English |
|---|---|
| Number of pages | 8 |
| Journal | IEEE Photonics Journal |
| Volume | 7 |
| Issue number | 5 |
| Early online date | 25 Sept 2015 |
| DOIs | |
| Publication status | Published - Oct 2015 |
Bibliographical note
© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Funding: Leverhulme Trust (Grant RPG-278); and EPSRC Program Grant UNLOC under Grant EP/J017582/1.
Keywords
- mode-locked fiber lasers
- nonlinear fiber optics
- frequency filtering
- pulse shaping