Abstract
The reflective characteristics of a multimode fiber Bragg grating (MM-FBG) and the changes of reflective spectra with mode excitation conditions in the multi-mode fiber were investigated. Two multiwavelength fiber laser configurations using offset launch technique to MM-FBG with hybrid gain mediums are proposed and demonstrated. Different multiwavelength outputs were obtained by variation of the spatial launching position of the single-mode fiber against the MM-FBG to achieve different mode group excitation. The first laser employs one MM-FBG in the ring cavity, achieving seven output wavelengths with a wavelength spacing of 0.76 nm. The second laser comprises two MM-FBGs connected in parallel, yielded 10 output wavelengths.
Original language | English |
---|---|
Pages (from-to) | 295-299 |
Number of pages | 5 |
Journal | Optics Communications |
Volume | 263 |
Issue number | 2 |
DOIs | |
Publication status | Published - 15 Jul 2006 |
Keywords
- Fiber laser
- Multi-mode fiber Bragg grating (MM-FBG)
- Multiwavelength lasers
- Offset launch technique
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics