Title :
Highly stable microwave carrier generation using a dual-frequency distributed feedback laser
Author :
Khan, M.R.H. ; Bernhardi, Edward H. ; Marpaung, David A. I. ; Burla, M. ; de Ridder, R.M. ; Worhoff, K. ; Pollnau, Markus ; Roeloffzen, Chris G. H.
Author_Institution :
Telecommun. Eng. group, Univ. of Twente, Enschede, Netherlands
Abstract :
Photonic generation of microwave carriers by using a dual-frequency distributed feedback waveguide laser in ytterbium-doped aluminum oxide is demonstrated. A high-performance optical frequency locked loop is implemented to stabilize the microwave carrier. This approach results in a microwave frequency at ~14 GHz with a phase noise of -75 dBc/Hz at 1 MHz offset from the center frequency. The frequency stability of the photonic microwave carrier has an Allan deviation of better than 1×10-10 for an averaging time of 1000 s with a loop settling time of 15 μs.
Keywords :
alumina; distributed feedback lasers; frequency locked loops; frequency stability; microwave generation; phase noise; ytterbium; Allan deviation; Yb:Al2O3; dual-frequency distributed feedback waveguide laser; frequency 1 MHz; frequency 14 GHz; frequency stability; microwave carrier generation; optical frequency locked loop; phase noise; photonic generation; time 1000 s; time 15 mus; Laser noise; Laser stability; Masers; Microwave oscillators; Optical feedback; Phase noise; Waveguide lasers; dual-frequency laser; frequency stability; microwave generation; optical frequency locked loop (OFLL);
Conference_Titel :
Microwave Photonics (MWP), 2012 International Topical Meeting on
Conference_Location :
Noordwijk
Print_ISBN :
978-1-4673-2863-0
DOI :
10.1109/MWP.2012.6474091
