Optical resonating device
US4839898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Jan 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/211
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber laser comprises an optical resonant cavity defined by an optical fiber (1). First and second reflectors (8, 13; 14, 19) are optically coupled with respective ends of the fibre. The first reflector is adapted to reflect radiation at the lasing wavelength and the second reflector to be partially transparent to radiation at the lasing wavelength. Each reflector comprises a directional coupler (8; 14) having first and second pairs of ports. One each of the one pair of ports (11; 16) of each coupler (8; 14) is optically coupled with the cavity (1) while both ports of the other pair (9, 10; 17,18) are coupled with a respective loop of optical fibre (13, 19). The remaining port (12) of one coupler (8) is connected with a source of pumping radiation (6), and the remaining port (15) of the other coupler (14), is available to output laser radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.