Monomodal optical fibre hydrophone operating by the elastooptica

Details Monomodal optical fibre hydrophone operating by the elastooptica Monomodal optical fibre hydrophone operating by the elastooptica

1980-06-26

1982-03-16

Blum, Theodore M.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

350 9614, H04R 2900

Patent

active

043204759

ABSTRACT:
The hydrophone has an interferometer structure incorporating a measuring arm in which is provided a very long monomodal optical fibre immersed in the interaction medium in which is propagated the acoustic wave. A phase displacement is induced on the optical wave by the elastooptical effect and said wave is propagated in the fibre by the acoustic wave which creates an acoustic pressure field in the medium. A reference arm establishes a reference optical path and the phase displacement linked with the acoustic wave is detected by interferometry between the two optical waves emerging from the two arms. The optical connections between the source, the optical fibre immersed in the interaction medium, the reference arm and the detector being provided in guided optics in a compact structure.

REFERENCES:
patent: 4193130 (1980-03-01), Young et al.
Journal of the Acoustical Society of America, vol. 64, No. 5, Nov. 1978, New York, (US) - P. Shajenko et al., "On Fiber-Optic Hydrophone Sensitivity", pp. 1286-1288 -- *p. 1286, left col., line 15 to right col., line 18, FIG. 1.
Optics and Laser Technology, vol. 7, No. 4, Aug. 1975 - Haywards Heath (GB) - G. Joynes et al., "Movement Measurement by Modulated Lasers Using Frequency Lock Loops", pp. 169-174, -- *p. 170, left col. line 38 through p. 171, left col., line 14, FIG. 1.

Affiliated with

Also associated with

Rating

Monomodal optical fibre hydrophone operating by the elastooptica does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Monomodal optical fibre hydrophone operating by the elastooptica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monomodal optical fibre hydrophone operating by the elastooptica will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1645007