Title :
High-resolution measurement of the fiber diameter variations using whispering gallery modes and no optical alignment
Author :
Birks, T.A. ; Knight, J.C. ; Dimmick, T.E.
Author_Institution :
Dept. of Phys., Bath Univ., UK
Abstract :
Light is coupled from the guided mode along one tapered optical fiber into the whispering gallery modes around the circumference of another. Small diameter variations in the second fiber are measured by tracking, at different points along it, the wavelengths at which these modes exist. The measurement does not require any optical alignment, and its resolution can be 1 part in 10 000 or better.
Keywords :
diameter measurement; micromechanical resonators; optical fibre couplers; optical fibre testing; optical resonators; fiber diameter variation measurement; high-resolution measurement; optical fibre testing; resolution; second fiber; small diameter variations; tapered optical fiber light coupling; tracking; whispering gallery modes; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical filters; Optical scattering; Optical sensors; Optical surface waves; Resonance; Wavelength measurement; Whispering gallery modes;
Journal_Title :
Photonics Technology Letters, IEEE
