Tunable fiber F-P cavity filter
A filter and optical fiber technology, applied in the field of new tunable fiber F-P cavity filter and wavelength demodulation, can solve the problems of unstable wavelength-voltage relationship of F-P cavity filter, affecting the performance of F-P cavity filter, optical performance drift, etc. , to achieve the effect of low cost, stable work and good repeatability
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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0046] The present invention adopts the F-P cavity filter for temperature control treatment, uses materials with negative thermal expansion coefficient to reduce the influence of temperature on the F-P filter, and strictly seals and heat-insulates the F-P cavity filter, so that the F-P provided by the present invention The cavity filter has a wide spectrum range and narrow tuning precision, and has the advantages of good repeatability, low cost and practicality.
[0047] Such as figure 2 as shown, figure 2 The structure schematic diagram of the tunable optical fiber F-P cavity filter provided by the present invention, this F-P cavity filter comprises:
[0048] An encapsulating box 1 made of metal or ceramic material;
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