Electric optical fiber grating filter with switchable central wavelength
US6556726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Mar 18, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electric optical fiber grating has a central wavelength. The central wavelength of an optical fiber grating can be adjusted under strain. The filter includes a bimetal plate, an elastic structure and an solenoid to achieve the goal of switching the central wavelength of an optical fiber grating. Meanwhile, the bimetal plate can also provide proper passive compensation according to the temperature effect around them so that it is not necessary for the optical fiber grating that can switch central wavelengths, to monitor and conduct feedback control at all times. Thus it does not consume power. Therefore, the electric optical fiber grating filter can both achieve the goal of switching central wavelengths and has the advantage of not being sensitive to temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.