Optical module, and optical transmission device
US7113658B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To provide optical modules and optical transmission devices that are suitable for communication forms using multimode optical fibers, an optical module includes a surface-emitting type semiconductor laser that emits polarized light oscillating in a multimode which is preferentially oriented in two given polarization axes, and an optical member that demonstrates at least one function among a transmission function, a reflection function, a refraction function, and a diffraction function alternatively to a predetermined polarization. The optical member is disposed such that a principal plane thereof intersects with a traveling direction of emission light of the surface-emitting type semiconductor laser and a polarization axis of the polarization plane does not overlap with the polarization axes of the emission light of the surface-emitting type semiconductor laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.