DOI: 10.1016/j.optcom.2015.12.012
Abstract:
We report a tunable monochromatic source generation scheme, based on Brillouin filtering of a self-referenced optical frequency comb. The system benefits from the high stability and mode linewidth of the frequency comb, significantly improving the performance of the original laser source used as Brillouin pump. A synthesized frequency with stability under 4× 10− 11 and a linewidth under 75 kHz was experimentally demonstrated for two separate pump lasers in the C-band. The proposed monochromatic source can be tuned with high...
Excerpt:
In order to characterize the ?ltered mode, the synthesized frequency was down-converted with the comb itself in the all-?-ber beat unit. The OFC output was ?ltered with a tunable optical ?ber ?lter (FOTF-025121333 from Agiltron, ranging from 1510 nm to 1580 nm) before beating. Since the SBS ?ltering process pre-serves the original OFC frequency, a frequency shift needs to be induced in the isolated mode for heterodyne characterization...