Tunable filter
US6892000B2 · kind B2 · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | May 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2793
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a tunable filter for launching incident light from an input side optical fiber into a diffraction grating through a condenser lens and emitting emission light from the diffraction grating through the condenser lens and outputting output light of a selected wavelength through an output side optical fiber, one optical fiber common to input and output is provided between the input side optical fiber and the output side optical fiber and the condenser lens, and also optical circulator member is provided between the input side optical fiber and the output side optical fiber and the one common optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.