Tunable narrowband fiber laser with feedback based on whispering gallery mode resonances of a cylindrical microresonator Article uri icon

abstract

  • Narrowband filtering based on whispering gallery modes of a slightly tapered cylindrical optical microresonator was used to implement a tunable narrowband erbium-doped fiber laser. The laser can be set to emit a single longitudinal cavity mode (single frequency), although the laser cavity is a few meters long. In the single-frequency regime the laser can emit a maximumpower of 0.380mWwith a linewidth <35 kHz and a signal-to-noise ratio exceeding 50 dB. Tunability is achieved by sliding the excitation point along the microcylinder. A tuning range of 1.16 nm is demonstrated. © 2013 Optical Society of America.

publication date

  • 2013-01-01