@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} }