All-optical wavelength conversion for a polarization multiplexing optical signal
US8098989B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Apr 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2/006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus includes a first laser source for providing a first lightwave; a first optical coupler that is polarization maintaining for dividing the first lightwave into first and second optical carrier lightwaves; first and second modulators for modulating respective ones of the first and second carrier lightwaves with information; a polarization beam combiner for combining the modulated first and second carrier lightwaves which generates a polarization multiplexing optical signal; second and third lasers for providing second and third lightwaves whose wavelengths are one of both longer than that of the first lightwave and shorter than that of the first lightwave, a second optical coupler that is polarization maintaining for combining the second and third lightwaves; and a third optical coupler for combining the modulated first and second carrier lightwaves from the polarization beam combiner and the combined second and third lightwaves out of the second optical coupler for transmission over an optical medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.