Regenerative passive resonator
US5123027A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Jun 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/12004
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a thin film micro-optic gyroscope (MOG) (10) a waveguide resonator structure (14) has an optical transmission path formed within a surface of a substrate (12). In one embodiment the path includes a predetermined amount of dopant (12a) for providing regenerative gain to radiation of a predetermined wavelength propagating through the path. The dopant is provided at a predetermined concentration and is substantially uniformly distributed throughout the path. By example, the substrate is comprised of neodymium-doped glass. A pump source is optically coupled to the path for exciting the dopant to emit radiation, the pump source providing radiation at a wavelength of approximately one-half of the predetermined wavelength. For the example of neodymium-doped glass the predetermined wavelength is 1.06 microns. The resulting regenerative resonator improves the quality of integrated optic resonators used in the MOG by providing a small amount of gain to the resonator to compensate for the optical signal lost by scattering, radiation and absorption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.