| 摘要 |
A fiber grating demodulation system for enhancing spectral resolution of a detector array, 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, and 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. |
| 主权项 |
1. A fiber grating demodulation system for enhancing spectral resolution of a detector array, the demodulation system comprising 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, wherein
the laser pump source, the wavelength division multiplexer, and the fiber Bragg grating are connected in sequence, and the wavelength division multiplexer is further 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, and a reflection spectrum of the fiber Bragg grating enters the slit of the fiber grating demodulation system as injected light, and 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; and the slit and the linear array detector are capable of being adjusted to shift along a direction perpendicular to incident direction of the light within a certain of range, and the collimating mirror, the light splitting grating and the imaging focus mirror are capable of being adjusted to rotate around its center line anticlockwise or clockwise by a certain of angle, and at least two of the slit, the collimating mirror, the light splitting grating, the imaging focus mirror, and the linear array detector are adjusted in above ways simultaneously in order to change the incident direction of the light, so as to obtain a finer interference stripes at smaller intervals on the linear array detector. |
