Wavelength stabilized laser light source
US6246816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength stabilized light source is constructed using a lasing element such as a laser diode which generates light that is substantially polarized. This light is conducted through a polarization maintaining optic fiber to a Bragg grating which reflects a portion of the light back to the laser diode forming a virtual laser cavity and stabilizing the wavelength of the laser diode light output over time and a broad range of temperature and drive circuit conditions. To produce a broad band light source, the laser diode light is used to pump an erbium doped fiber. The wavelength stabilized light source can be used in fiber optic gyroscopes as well as in other applications that require a light source with a very stable wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.