Optical filter device having creep-resistant optical fiber attachments
US6507693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Jun 1, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3854
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and device for tuning an optical device including an optical fiber having a core, a cladding and a Bragg grating imparted in the core to partially reflect an optical signal at a reflection wavelength characteristic of the spacing of the Bragg grating. The cladding has two variation regions located on opposite sides of the Bragg grating to allow attachment mechanisms to be disposed against the optical fiber. The attachment mechanisms are mounted to a frame so as to allow the spacing of the Bragg grating to be changed by an actuator which tunes the reflection wavelength. In particular, the variation region has a diameter different from the cladding diameter, and the attachment mechanism comprises a ferrule including a front portion having a profile substantially corresponding to diameter of the variation region and a butting mechanism butting the ferrule against the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.