Multiport tunable optical filters
US9310564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2014 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Sep 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/675
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable multiport optical filter includes various types of arrays of optical ports. The tunable filter also includes a light dispersion element (e.g., a grating) and a reflective beam steering element (e.g., a tilting mirror). An optical signal exits an optical (input) port, is dispersed by the light dispersion element, reflects off the reflective beam steering element back to the light dispersion element, and on to another optical (output) port. The reflective beam steering element can be steered such that a wavelength portion of the dispersed optical signal can be coupled to the optical output port. For example, the input optical signal may be a wavelength division multiplexed signal carrying multiple channels on different wavelengths, and the tunable multiport optical filter directs one of the channels to the output optical port. Additionally, the tunable filter may be incorporated into a device acting as a wavelength reference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.