Title :
Method of power recycling in CoAxial Mach-Zehnder interferometers for low noise measurements
Author :
Parker, Stephen ; Ivanov, Eugene ; Tobar, Michael
Author_Institution :
Sch. of Phys., Univ. of Western Australia, Crawley, WA
fDate :
5/1/2009 12:00:00 AM
Abstract :
We present the first experimental study of a new type of power recycling microwave interferometer designed for low noise measurements. This system enhances sensitivity to phase fluctuations in a device under test, independent of input power levels. The single sideband thermal white phase noise floor of the system has been lowered by 8 dB (reaching -185 dBc/Hz at 1 kHz offset frequency) at relatively low power levels (13 dBm).
Keywords :
Mach-Zehnder interferometers; electric noise measurement; fluctuations; coaxial Mach-Zehnder interferometers; device under test; low noise measurements; phase fluctuations; power recycling microwave interferometer; thermal white phase noise floor; Attenuation; Coaxial components; Cryogenics; Fluctuations; Insertion loss; Noise measurement; Phase noise; Recycling; Temperature; Voltage;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2009.1124
