Optical receiver configurable to accommodate a variety of modulation formats
US10009115B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2012 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Feb 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/67
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a simple means of demodulating optical signals, e.g. wideband M-ary orthogonal. The demodulator comprises an optical processor and a comparison module. The optical processor transforms M input optical signals into 2 log2(M) intermediary optical signals and the comparison module determines the logical representation of the input data based on log2(M) binary comparisons of the optical power of the intermediary signals. Example embodiments may be reconfigurable to receive optical signals using M-FSK, M-PPM, M-PolSK, and hybrid M-ary orthogonal modulation formats. Example embodiments also offer small size, weight and power consumption for both free-space and fiber optic environments as well as improved receiver sensitivity and reduced electron bandwidth requirements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.