Temperature compensating device for fiber gratings and a package therefor
US6144789A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0218
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.