Related Experiment Video
Updated: Jun 22, 2026
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Single- and dual-wavelength switchable erbium-doped fiber ring laser based on intracavity polarization selective
Chengbo Mou1, Pouneh Saffari, Hongyan Fu
1Photonics Research Group, School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK. mouc@aston.ac.uk
Abstract:
We propose and demonstrate a single- and dual-wavelength switchable erbium-doped fiber laser (EDFL) by utilizing intracavity polarization selective filters based on tilted fiber gratings (TFGs). In the cavity, one 45 degrees TFG functions as an in-fiber polarizer and the other 77 degrees TFG is used as a fiber polarization dependent loss (PDL) filter. The combined polarization effect from these two TFGs enables the laser to switch between the single- and the dual-wavelength operation with a single-polarization state at room temperature. The laser output at each wavelength shows an optical signal-to-noise ratio (OSNR) of >60 dB, a side mode suppression ratio (SMSR) of >50 dB, and a polarization extinction ratio of approximately 35 dB. The proposed EDFL can give stable output under laboratory conditions.
