Frequency-domain displacement sensing with a fiber ring-resonator containing a variable gap
2007
Article
pf
Ring-resonators are in general not amenable to strain-free (non-contact) displacement measurements. We show that this limitation may be overcome if the ring-resonator, here a fiber-loop, is designed to contain a gap, such that the light traverses a free-space part between two aligned waveguide ends. Displacements are determined with nanometer sensitivity by measuring the associated changes in the resonance frequencies. Miniaturization should increase the sensitivity of the ring-resonator interferometer. Ring geometries that contain an optical circulator can be used to profile reflective samples. (c) 2006 Elsevier B.V. All rights reserved.
Author(s): | Vollmer, Frank and Fischer, Peer |
Journal: | SENSORS AND ACTUATORS A-PHYSICAL |
Volume: | 134 |
Number (issue): | 2 |
Pages: | 410-413 |
Year: | 2007 |
Department(s): | Micro, Nano, and Molecular Systems |
Bibtex Type: | Article (article) |
DOI: | 10.1016/j.sna.2006.06.022 |
BibTex @article{ISI:000245319900017, title = {Frequency-domain displacement sensing with a fiber ring-resonator containing a variable gap}, author = {Vollmer, Frank and Fischer, Peer}, journal = {SENSORS AND ACTUATORS A-PHYSICAL}, volume = {134}, number = {2}, pages = {410-413}, year = {2007}, doi = {10.1016/j.sna.2006.06.022} } |