Title :
Low-biased fiber-optic link for microwave downconversion
Author :
Howerton, M.M. ; Moeller, R.P. ; Gopalakrishnan, G.K. ; Burns, W.W.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
Downconversion of microwave signals using fiber-optic links is investigated while low-biasing one modulator in a cascaded pair. Enhancement of the downconverted signal and variation of intermodulation distortion terms as a function of phase bias are studied theoretically and experimentally. Distortion is significant at high local oscillator powers needed to minimize conversion loss.
Keywords :
intermodulation distortion; optical fibre losses; optical fibre networks; optical frequency conversion; optical modulation; optical noise; cascaded pair; conversion loss; high local oscillator powers; intermodulation distortion terms; low-biased fiber-optic link; low-biasing; microwave downconversion; microwave signal downconversion; phase bias; Frequency; High speed optical techniques; Optical distortion; Optical interferometry; Optical losses; Optical mixing; Optical modulation; Optical saturation; Photodetectors; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
