Fiber grating demodulation system for enhancing spectral resolution by finely shifting slit
US9869588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2016 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Oct 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/064
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber grating demodulation system for enhancing spectral resolution by finely adjusting a slit, includes a laser pump source, a wavelength division multiplexer, a fiber Bragg grating, a diaphragm, a slit, a collimating mirror, a light splitting grating, an imaging focus mirror, and a linear array detector. The laser pump source, the wavelength division multiplexer, the fiber Bragg grating are connected in sequence, and the wavelength division multiplexer is connected to the diaphragm. Light emitted from the laser pump source is multiplexed by the wavelength division multiplexer and then enters the fiber Bragg grating, a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light. After passing through the slit, the injected light is reflected by the collimating mirror, the light splitting grating, and the imaging focus mirror in sequence, and is finally converged to the linear array detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.