Module with wavelength-based directional bias of light for receiving and transmitting optical signals
US10698169B1 · kind B1 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 23, 2019 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Dec 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/40
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical module with directional bias of light beams for improved reception and transmission of optical signals includes a substrate, a photodetector disposed on the substrate, and an optical path control element disposed above the substrate. The optical path control element includes a filter and a reflector. The filter has an upper surface and a lower surface opposite to the upper surface, and the reflector is in contact with the upper surface. A first light beam enters the filter through the lower surface, and is reflected by the reflector to the photodetector. A light source is disposed on the substrate and emits a second light beam. The second light beam is reflected by the lower surface and away from the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.