Distributed feedback laser diode
US4794618A · kind A · utility
13Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jul 23, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2277
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved distributed feedback laser diode comprises a diffraction grating in a resonator. The diffraction grating is formed to have a phase shift of .lambda./8 to 3.lambda./16 at a portion thereof so that the phase shift amount of approximately .lambda./4 is obtained in a case where a maximum rate of light output is produced thereby to result in a single axial mode oscillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.