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Frequency-domain displacement sensing with a fiber ring-resonator containing a variable gap

2007

Article

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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}
}