Wavelength selective fiber to fiber optical tap
US6016375A · kind A · utility
Inventors
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Jan 8, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2938
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light is coupled out of a first mono-mode optical waveguide such as an optical fiber an into another single mode waveguide through a substantially planar slab waveguide. The first mono-mode optical waveguide has a grating impressed within which has refractive index perturbations that reflect predetermined wavelengths of incident light out of a portion of a side of the optical waveguide adjacent the grating; The slab planar waveguide has an end optically coupled to the portion of the first mono-mode optical waveguide, for guiding light coupled out of the side of the waveguide, and for maintaining a uni-phase wavefront of said light by having a response that confines the light to a single mode in one dimension, and multi-mode in another dimension and allows at least a portion of the light to converge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.