Miniaturized mandrel-based fiber optic hydrophone.
Fiber optic hydrophones typically use a long sensor fiber wrapped around an air-filled mandrel to achieve high responsivity. Minimum mandrel diameter is determined by fiber reliability considerations. A miniature hydrophone, with diameter of about a third that of previous hydrophones, is reported. Such a hydrophone has applications for very thin towed arrays. Small diameter fiber with high strength Bragg gratings written through the coating are key enablers.
Ames
Gregory H
GH
Naval Undersea Warfare Center, Division Newport, 1176 Howell Street, Newport, Rhode Island, 02841, USA.
Maguire
Jason M
JM