| 摘要 |
<p>A spectrum analysis device comprises a tunable Fabry-Perot filter (400), a tunable acoustooptic filter (500), a first photodetector (84), a second photodetector (86), and a system control and data analysis system (92). Incident light (76) is filtered first through the tunable Fabry-Perot filter (400), a light beam (78) output by the tunable Fabry-Perot filter (400) is filtered through the tunable acoustooptic filter (500), the tunable acoustooptic filter (500) outputs two linearly polarized light beams (80, 82) with mutually perpendicular polarization states and having a certain separated included angle, and the two linearly polarized light beams (80, 82) are respectively received by the first photodetector (84) and the second photodetector (86). The system control and data analysis system (92) is used by the spectrum analysis device for detecting the power and spectrum of the incident light (76). The spectrum analysis device has characteristics of absence of mechanical moving parts, stable and reliable performance, small sizes, easiness for mounting and production and the like, meets requirements of small sizes and extreme environments, and may be widely applied in the fields of lasers, optical testing, optical fiber communications, biological and medical instruments, optical fiber sensor networks and the like.</p> |
