Title :
Phase stability of optical self-heterodyned microwave signals with Nd:YVO4 laser
Author :
Kovacs, Gabor ; Herczfeld, Peter R. ; Berceli, Tibor
Author_Institution :
Electr. & Comput. Eng. Dept., Drexel Univ., Philadelphia, PA, USA
Abstract :
This paper concerns the phase stability of an opto-electronic QAM-over-Fiber transmitter, which generates complex modulated radio signals directly in the optical domain. The transmitter is based on a single wavelength tunable Nd:YVO4-LiNbO3 electro-optic microchip laser and a simple self-heterodyne fiber optic arrangement without phase stabilization feedback. Using a narrow, 10 kHz linewidth laser and high-pass phase-noise filtering of the time-delay self-heterodyne (TDSH) arrangement provides for excellent microwave signal quality.
Keywords :
electro-optical modulation; heterodyne detection; lithium compounds; microchip lasers; microwave photonics; neodymium; optical fibre filters; optical noise; optical transmitters; phase noise; quadrature amplitude modulation; radio-over-fibre; yttrium compounds; YVO4:Nd-LiNbO3; electrooptical microchip laser; frequency 10 kHz; high-pass phase-noise filtering; modulated radio signal generation; narrow linewidth laser; optical self-heterodyned microwave signals; optoelectronic QAM-over-fiber transmitter; phase stability; time-delay self-heterodyne fiber optic arrangement; Laser tuning; Masers; Optical fibers; Optical mixing; Optical transmitters;
Conference_Titel :
Microwave Photonics (MWP), 2010 IEEE Topical Meeting on
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4244-7824-8
DOI :
10.1109/MWP.2010.5664141
