Distributed optical fiber sensor with controlled response

Details Distributed optical fiber sensor with controlled response Distributed optical fiber sensor with controlled response

2006-02-28

2006-02-28

Nguyen, Thong (Department: 2872)

Optical waveguides

Optical waveguide sensor

C385S122000, C356S073100

Reexamination Certificate

active

07006718

ABSTRACT:
Distributed fiber optic chemical and physical sensors provide a relatively highly uniform response over the length of the fiber by, for example, varying such properties as the core/cladding index of refraction ratio to compensate for the non-linearity in sensitivity due to the loss of higher order modes in multi-mode fibers. The variation of the ratio changes the absorption coefficient of the fiber and can be used to compensate for any non-linearity in response. Other techniques for compensation also are disclosed.

REFERENCES:
patent: 4560248 (1985-12-01), Cramp et al.
patent: 4881793 (1989-11-01), Tarbox
patent: 5572618 (1996-11-01), DiGiovanni et al.
patent: 5995686 (1999-11-01), Hamburger et al.

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