Abstract
We propose and demonstrate a mode and wavelength-switchable pulsed fiber laser using two-mode fiber Bragg grating (TM-FBG) as both transverse mode converter and wavelength selector. The mode-locking mechanism is based on saturable absorption of semiconductor saturable absorption mirror (SESAM). Due to the use of low polarization-dependent mode-locking method, polarization disturbation between mode-locking and transverse-mode selection has been effectively eliminated, thus enabling flexible transverse-mode selection with simultaneous mode-locking operation. Moreover, through the optimized offset launching technique, this laser can operate at the wavelengths of the fundamental mode (LP01) and second-order mode (LP11), and thus export cylindrical vector beams (CVBs) and fundamental mode beams at the TM-FBG output port, respectively. This all-fiber laser is a simple, low-cost and flexible source for mode-division multiplexing system and other applications.
| Original language | English |
|---|---|
| Article number | 8732358 |
| Pages (from-to) | 1155-1158 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 31 |
| Issue number | 14 |
| Early online date | 6 Jun 2019 |
| DOIs | |
| Publication status | Published - 15 Jul 2019 |
Bibliographical note
© 2019 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.Keywords
- Cylindrical vector beams
- dual-wavelength
- mode-locked lasers
- two-mode fiber Bragg grating