Multiwavelength erbium-doped fiber laser based on inhomogeneous loss mechanism by use of a highly nonlinear fiber and a Fabry-Perot filter

Shilong Pan, Caiyun Lou, Yizi Gao
2006 Optics Express  
We demonstrated a simple technique to obtain stable room temperature multiwavelength lasing in an erbium-doped fiber laser by the inhomogeneous loss mechanism. Successful reduction of the cross-gain saturation in erbium-doped fiber was achieved by incorporating a section of highly nonlinear fiber (HNLF) and a narrowband Fabry-Perot filter (FPF) in the laser cavity. More than 70 wavelengths simultaneous lasing were observed with the same frequency space of 25GHz. The laser had a total output
more » ... a total output power of ~3.2dBm, a bandwidth of 0.012nm (~1.5GHz) and a signalto-spontaneous-noise ratio of ~44dB. The total output power can be further increased to more than 190mW by moving the output port right after the EDFA.
doi:10.1364/oe.14.001113 pmid:19503433 fatcat:sz2ozpjoonerxjxlecymamrvsu