Now showing items 1-3 of 3
Self-compensating fiber optic flow sensor having an end of a fiber optics element and a reflective surface within a tube
(United States Patent and Trademark Office, 2006-05-16)
A flow rate fiber optic transducer is made self-compensating for both temperature and pressure by using preferably well-matched integral Fabry-Perot sensors symmetrically located around a cantilever-like structure. Common ...
Optical fiber sensors based on pressure-induced temporal periodic variations in refractive index
(United States Patent and Trademark Office, 2006-11-21)
A optical fiber sensor for measuring temperature and/or pressure employs temporally created long period gratings. The gratings may be produced by a periodic change in the refractive index of the fiber along the fiber ...
Optical fiber pressure and acceleration sensor fabricated on a fiber endface
(United States Patent and Trademark Office, 2006-05-30)
A fiber optic sensor has a hollow tube bonded to the endface of an optical fiber, and a diaphragm bonded to the hollow tube. The fiber endface and diaphragm comprise an etalon cavity. The length of the etalon cavity changes ...