Optical signal generating apparatus and operating method thereof
US10291327B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2017 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Dec 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/60
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical signal generating apparatus according to an embodiment of the inventive concept includes a first optical intensity modulator for modulating a first optical signal to generate a 2N-level (where N is a positive integer) second optical signal in the form of a binary signal, a first optical amplifier for amplifying the second optical signal to generate a third optical signal, and a second optical intensity modulator for modulating the third optical signal to generate a 2N+1-level fourth optical signal in the form of a binary signal. The optical signal generating apparatus according to an embodiment of the inventive concept may generate a low-cost, high-quality optical signal by using an optical device to generate a multi-level optical signal. Additionally, the optical signal generating apparatus according to an embodiment of the inventive concept may generate a multi-level optical signal by sequentially performing optical modulation and optical amplification operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.