Temperature compensating device for fiber gratings and a package

Details Temperature compensating device for fiber gratings and a package Temperature compensating device for fiber gratings and a package

1999-05-25

2000-11-07

Schuberg, Darren

Optical waveguides

With optical coupler

Input/output coupler

385 24, 359130, G02B 634

Patent

active

061447897

ABSTRACT:
A temperature compensating device for optical fiber gratings includes first and second expansion members having different coefficients of thermal expansion. The expansion members are elongated in a direction parallel to the fiber grating and levers are secured to both ends of the expansion members. Each lever has a first end flexibly secured to a respective end of the first expansion member and a middle portion flexibly secured to a respective end of the second expansion member. The other end of each lever is secured to a respective end of the fiber grating. The expansion members, the levers and the fiber grating all lie substantially in a single plane. There is also disclosed a package for holding four of the temperature compensating devices in two rows of two devices each, with their fiber gratings adjacent each other so that when viewed in a plane orthogonally to the longitudinal axes of the fiber gratings, the fiber gratings are each at a respective corner of a rectangle.

REFERENCES:
patent: 5757540 (1998-05-01), Judkins et al.
patent: 5841920 (1998-11-01), Lemaire et al.
patent: 5987200 (1999-11-01), Fleming et al.
patent: 5999671 (1999-12-01), Jin et al.

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