Title :
Coherence-Controlled mm-Wave Generation Using a Frequency-Shifting Recirculating Delay Line
Author :
Pulikkaseril, Cibby ; Hanham, Stephen M. ; Shaw, Robert ; Minasian, Robert A. ; Bird, Trevor S.
Author_Institution :
Sch. of Electr. & Inf. Eng., Univ. of Sydney, Sydney, NSW, Australia
fDate :
4/1/2010 12:00:00 AM
Abstract :
A photonic technique based on optical heterodyning for the generation of microwave and millimeter-wave signals is presented in this paper. Coherence control of a comb of time-delayed and frequency-shifted optical signals is used to selectively beat multiple optical signals together to produce a stable, spectrally pure microwave, or millimeter-wave signal. This approach is demonstrated by generating signals at 11.25 and 30 GHz. The linewidth of the generated signal is independent of the linewidth of the optical source employed, and is shown to be less than 100 Hz with sideband suppression >30 dB.
Keywords :
Mach-Zehnder interferometers; delays; microwave generation; microwave photonics; millimetre wave generation; optical communication equipment; optical control; optical couplers; optical delay lines; optical noise; photodetectors; spectral line breadth; Mach-Zehnder interferometer; coherence-controlled mm-wave signal generation; frequency 11.25 GHz; frequency 30 GHz; frequency-shifted optical signal; frequency-shifting recirculating delay line; microwave generation; optical heterodyning; phase-induced intensity noise; sideband suppression ratio; signal linewidth; time-delayed optical signal; Microwave photonics; optical millimeter-wave (mm-wave) generation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2038725
