Turnning optical fibre method Fabry-perot filter

Abstract

The present invention discloses a tunable optical fiber Fabry-Pero filter. The object is to provide the tunable optical fiber Fabry-Pero filter with a Fabry cavity optical fiber waveguide, easy manufacturing and low cost. The present invention comprises a core inset (1), the optical fiber waveguide (2), a high reflecting coating (3), an antireflection coating (4), an optical fiber (5), a support (6), a piezoelectric ceramics (7) and a fiber collimator (8); the optical fiber waveguide is fixed in one inner hole of the core insert. One end surface is placed in the inner hole of the core insert and the other end surface is placed on the same flat with the core insert end surface. The inner hole of the core insert which fixes the optical fiber waveguide is also inserted by the optical fiber. The optical fiber and the optical fiber waveguide are automatically aligned through the inner hole of the core insert. One of the two adjacent end surfaces of the optical fiber and the optical fiber waveguide is coated with the high reflecting coating. The end surface of the core insert or the other end surface of the core insert with optical fiber is coated with the high reflecting coating, so the optical fiber Fabry-Pero filter is formed.

Description

technical field [0001] The invention relates to an optical device used in an optical fiber communication system and an optical fiber sensing system, in particular to a tunable optical fiber Fabry-Perot filter. Background technique [0002] Tunable optical fiber Fabry-Perot (Fabry-Perot, FP, Fabry) filter is an important optical filter, which is a key component of modern optical fiber communication systems and optical fiber sensing systems, and has a wide range of uses, such as Optical performance monitoring in optical communication, optical noise filtering, noise suppression of optical amplifiers, channel selection and locking in wavelength division multiplexing systems, and wavelength tuning of laser light sources; in optical fiber sensing systems, tunable fiber optics Filters are used for wavelength scanning and are key devices in wavelength demodulation and spectral analysis systems. [0003] The optical fiber FAP filter is composed of a pair of optical fibers coated wit...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing method for making the optical fiber waveguide in the Fa-Per cavity is complex and has high requirements for equipment and technology, and to provide a fiber-optic waveguide with F-P Intra-cavity fiber waveguide, easy-to-fabricate, low-cost tunable fiber-optic F-P filter

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