Optical parametric circuit and optical circuit using the same
US5604618A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3519
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an optical parametric circuit for separating four-wave-mixing wave(s) (FWM wave(s)) from signal wave(s) and/or pump waves without using a wavelength filtering device, and optical circuits using the same. The optical parametric circuit of the present invention is made by connecting two output ports of a 2.times.2 optical directional coupler to a nonlinear optical medium via dispersive optical media, each of which has a specific length and a specific propagation constant. By inputting signal waves having carrier angular frequencies .omega..sub.Sj (j=1, 2, . . . N) and pump waves having carrier angular frequencies .omega..sub.P1, .omega..sub.P2 into the first input port of the optical directional coupler, the FWM waves, generated in the nonlinear optical medium, having carrier angular frequencies .omega..sub.fj (=.omega..sub.P1 +.omega..sub.P2 -.omega..sub.S) are output from the second input port of the optical directional coupler. By inputting the signal waves and the pump waves from different input ports of the directional coupler, it is possible to separate amplified signal waves and the FWM waves from the pump waves. By adjusting the lengths and the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.