Title :
Dual photonic-delay line cross correlation method for phase noise measurement
Author :
Salik, Ertan ; Yu, Nan ; Maleki, Lute ; Rubiola, Enrico
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We describe the application of a cross-correlation method with dual photonic delay-line for homodyne phase noise measurement of low-noise microwave oscillators. This method combines a delay-line discriminator and cross correlation with the use of a low-loss kilometer-long photonic delay. By using a 4.5 km optical fiber as a photonic delay, we demonstrated a measurement noise floor of -158 dBc/Hz at 10 kHz offset without a reference oscillator.
Keywords :
correlation methods; discriminators; electric noise measurement; homodyne detection; microwave measurement; microwave oscillators; optical delay lines; phase noise; 4.5 km; cross-correlation method; delay-line discriminator; dual photonic delay-line; homodyne phase noise measurement; low-loss photonic delay line; low-noise microwave oscillators; measurement noise floor; optical fiber photonic delay; Correlation; Delay; Microwave measurements; Microwave oscillators; Microwave theory and techniques; Noise measurement; Optical fibers; Optical noise; Phase measurement; Phase noise;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418469
