Optical device with a laser-to-fiber coupler
US4199222A · kind A · utility
68Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1977 |
| Grant date | Apr 22, 1980 |
| Priority date | — |
| Expiry date | Nov 8, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4292
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser-to-fiber coupler is constructed by an optical waveguide arranged between a semiconductor laser and a transmitting optical fiber through which an optical beam emanating from the laser is transmitted in order to reduce the amount of a reflection beam from the optical fiber, which is injected into the active layer of the semiconductor laser. The waveguide is made by an optical fiber of which at least one of core radius or numerical aperture (N.A.) is smaller than those of the transmitting optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.