Title :
Sideband noise of a large phase carrier in interferometric sensors
Author :
Koo, K.P. ; Bucholtz, Frank ; Dandridge, A.
Author_Institution :
Naval Research Laboratory, Washington, USA
Abstract :
Interferometric sensors using balanced detectors and phase stabilisation schemes remain susceptible to laser intensity noise if phase carrier techniques are employed. An intensity stability of 4 × 10¿6 is required for the low-frequency side-band noise to be equivalent to microradian phase shift sensitivity if the phase carrier has a peak phase shift of ¿/2 rad.
Keywords :
fibre optic sensors; light interferometry; measurement by laser beam; noise; balanced detectors; fibre optic sensor; intensity stability; interferometric sensors; large phase carrier; laser intensity noise; low-frequency sideband noise; microradian phase shift sensitivity; phase stabilisation schemes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870742
