Fiber optics signal attenuator
US6222656A · kind A · utility
16Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Mar 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3594
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An attenuator for use in a wavelength division multiplexer (WDM) uses an opaque knife-edge as a light attenuator. The attenuator is moved along a single axis for controllably blocking the light output of an optical fiber whose light output is to be attenuated. By selectively moving the edge of the attenuator in front of the optical fiber, the attenuator can block any amount of the light output. Multiple attenuators are incorporated in a WDM, each attenuator being used in a channel associated with a particular narrow band of wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.