Method for preparing transparent photoelectric ceramic-base tunable wave filter

Abstract

The invention discloses a method for preparing a transparent photoelectric ceramic-base tunable Fabry-Perot cavity wave filter. The tunable Fabry-Perot cavity wave filter comprises a collimator composed of a self-focusing lens and a tail fiber, novel plumbum magnesio niobate-plumbum titanate (PMN-PT) photoelectric transparent ceramics and a cylindrical metal cavity, wherein the end surface of the collimator is coated with an antireflection film; the novel plumbum magnesio niobate-plumbum titanate (PMN-PT) photoelectric transparent ceramics are coated with an antireflection film, a high reflective film and a transparent electrode; and the novel plumbum magnesio niobate-plumbum titanate (PMN-PT) photoelectric transparent ceramic block, both ends of which are respectively coated with a high reflective film, forms the Fabry-Perot cavity. The birefringent effect which is generated from the optical waves in the cavity when the voltage changes, and the multipass interference effect formed along with the reflection are utilized to carry out the tunable filtering. The wave filter has the advantages of low requirement for rear end equipment, small volume and stable performance, is suitable for mass production and can be widely used in optical fiber sensing systems.

Description

technical field [0001] The invention relates to a novel Fabry-Perot cavity (Fabry-Perot, hereinafter referred to as FP) tunable optical filter device, specifically a novel lead magnesium niobate-lead titanate (PMN-PT) with high electro-optic coefficient ) Optoelectronic transparent ceramics to fabricate tunable Fabry-Perot cavity filters. technical background [0002] Tunable optical filter is a key component of wavelength division multiplexing system. It allows us to select specific wavelength and frequency to pass through the link in real time within a certain wavelength range, and can control and process the optical network through specific technology. data flow. Especially with the application of dense optical multiplexing transmission system in optical communication, as the core part of multiplexer and demultiplexer, tunable filter has become an indispensable device in optical network. [0003] At present, there are four main methods for preparing tunable Fabry-Perot ...

AI Technical Summary

Problems solved by technology

Lithium niobate crystal is suitable for making various control coupling and transmission devices of light, such as optical isolation, amplification, waveguide, modulation and other devices, but because its growth technology has not been broken through for a long time, and the service life of single crystal is short, people have been working hard Find new materials with better performance and cheaper prices to replace lithium niobate crystals

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