Title :
Phase-noise reduction in coherence-multiplexed interferometric fibre sensors
Author :
Kersey, A.D. ; Dandridge, A.
Author_Institution :
Naval Research Laboratory, Washington, USA
Abstract :
A method for the reduction of excess phase noise in coherence-multiplexed fibre sensors is described. The technique utilises diode laser frequency modulation to effect a frequency translation of the excess noise power. An improvement close to 40 dB in minimum detectable phase shift sensitivity is demonstrated using the technique.
Keywords :
fibre optic sensors; light interferometers; coherence-multiplexed interferometric fibre sensors; diode laser frequency modulation; frequency translation; minimum detectable phase shift sensitivity; reduction of excess phase noise; sensitivity improvement 40 dB;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860419
