Title :
RF-photonic links for local-oscillator distribution and frequency conversion
Author :
Yap, Daniel ; Ng, Willie W. ; Wang, Harry T M ; Sayyah, Keyvan R. ; Persechini, David L.
Author_Institution :
HRL Labs., Malibu, CA, USA
Abstract :
RF-photonic approaches have been evaluated for distributing electrically generated local oscillator (LO) signals as well as for performing frequency conversion with optically generated LO signals. For high-fidelity distribution of electrically generated signals, a switched RF photonic link was measured to have a residual phase noise of -145 dBc/Hz at an offset of 10 kHz from the X-band carrier. The switch isolation was better than 80 dB. For efficient frequency conversion with the RF-photonic approach, a relative conversion loss of 6.2 dB was measured for an LO modulation index of 0.97
Keywords :
electro-optical modulation; microwave frequency convertors; microwave oscillators; microwave photonics; optical fibres; phase noise; 6.2 dB; LO signals; X-band carrier; electrically generated signals; frequency conversion; high-fidelity distribution; local oscillator distribution; modulation index; optically generated signals; relative conversion loss; residual phase noise; switch isolation; switched RF photonic link; Electric variables measurement; Frequency conversion; Local oscillators; Noise measurement; Optical noise; Performance evaluation; Phase measurement; RF signals; Radio frequency; Signal generators;
Conference_Titel :
Phased Array Systems and Technology, 2000. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Dana Point, CA
Print_ISBN :
0-7803-6345-0
DOI :
10.1109/PAST.2000.858977
