Light-emitting apparatus capable of selecting polarization direction, optical communication system, and polarization modulation control method
US5590145A · kind A · utility
42Cited by
5References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06236
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-emitting apparatus capable of selecting polarization direction of a light outputted therefrom includes a semiconductor laser and an optical amplifying device. The semiconductor laser is capable of selectively changing a direction of polarization plane of the output light to one of two orthogonal directions by controlling an excited state. The optical amplifying device amplifies the output light from the semiconductor laser. The optical amplifying device has amplification factors with respect to polarized light components in two orthogonal directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.