Integrated variable optical attenuator
US7235852B2 · kind B2 · utility
1Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Apr 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/21
Abstract
A variable optical attenuator. A PIN structure is integrated with an optical detector such as a PIN diode or an APD diode. When the PIN structure is forward biased, the light signal is not affected and is detected by the optical detector. When the PIN structure is reverse biased, the light signal is attenuated and the dynamic range of the optical detector can be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.