Device and method for measuring performance of reflective volume grating
A volume grating and reflective technology, which is applied in the field of devices for measuring the performance of reflective volume gratings, can solve problems such as the inability to accurately detect the performance of reflective volume grating devices, and achieve the effect of clear measurement methods and data processing, and simple structure
Active Publication Date: 2022-01-07
杭州拓致光电科技有限公司
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Problems solved by technology
[0005] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a device and method for measuring the performance of reflective volume gratings, aiming at solving the problem that the prior art cannot accurately detect the performance of reflective volume grating devices
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[0022] The present invention provides a device and method for measuring the performance of a reflective volume grating. In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, the present invention will be described in further detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0023] see figure 1 , figure 1 It is a schematic structural diagram of a device for measuring the performance of a reflective volume grating provided by the present invention. As shown in the figure, it includes a tunable laser 1, a diaphragm 2, a beam splitter 3, an electric turntable 4 and a first one placed in sequence on the horizontal line. The power meter 5, the electric turntable 5 is provided with a reflective volume grating 8 to be measured, and the light beam emitted by the tunable laser 1 passes through the diaphragm...
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Abstract
The invention discloses a device and method for measuring the performance of a reflective volume grating, and the device comprises a tunable laser, a diaphragm, a beam splitter, an electric rotary table and a first power meter which are sequentially disposed on a horizontal line, wherein the electric rotary table is provided with a reflective volume grating to be measured. A light beam emitted by the tunable laser sequentially passes through the diaphragm, the beam splitter and the reflective volume grating to be measured and then enters the first power meter; a second power meter used for receiving light beams reflected by the light splitting sheet is further arranged below the beam splitter. The tunable laser, the electric rotary table, the first power meter and the second power meter are all connected to a computer. The device provided by the invention can accurately measure the performance parameters such as the central wavelength, the reflection efficiency, the full width at half maximum, the inclination angle and the like of the reflective volume gratings of different specifications, is simple in structure, is clear in measurement method and data processing, and has universality.
Description
technical field [0001] The invention relates to the technical field of performance detection of reflective volume gratings, in particular to a device and method for measuring the performance of reflective volume gratings. Background technique [0002] Semiconductor lasers have the advantages of high efficiency, small size, light weight, long life and easy integration, and have been widely used in laser communication, optical storage, optical gyroscope, laser printing, ranging and radar. However, the output spectral linewidth of semiconductor lasers is generally 2-5nm, and the center wavelength drifts greatly with the change of temperature, so the application of external cavity wave locking and spectral compression technology is born. [0003] The patent with publication number CN110879433B discloses a method for preparing a reflective volume grating based on photothermal folded glass, which specifically introduces the preparation method of a reflective volume grating, and do...
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IPC IPC(8): G01M11/02
CPCG01M11/02G01M11/0242
Inventor 晋帅胡红雷宋学智嵇舒豪
Owner 杭州拓致光电科技有限公司