Bistable optical device comprising a lightly doped optical fibre
US4910737A · kind A · utility
20Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Jul 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F3/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fibre laser (1) of the type comprising a doped single-mode optical fibre (3) arranged between reflectors (5,7), and which is coupled (11) to an optical pumping source (9). For the given reflection efficiency of the reflectors (5,7), the length of the optical fibre (3) is chosen such that it exceeds that affording saturation and provides at its end a region for absorption (FIG. 1). The resultant hysteretic behavior of this bistable device may be utilized for logic memory (bistable), and regenerative amplification applications. To this end a second source (9') can be coupled (11',19) to the laser fibre (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.