Tunable broadband nanometer optical fiber band-pass filter

Abstract

The invention belongs to the technical field of nanometer optical fiber band-pass filters, and particularly relates to a tunable broadband nanometer optical fiber band-pass filter. The filter aims atsolving the problems that operating of a band-pass filter of an existing optical fiber system is mainly based on technical means of interference, an optical grating, coupling and the like, so that thebandwidth is narrow, the application wave band is fixed and cannot be tuned, and most existing optical fiber band-pass filters cannot achieve the band-pass filtering effect within a hundred-nanometerrange. The tunable broadband nanometer optical fiber band-pass filter comprises a broadband optical source, nanometer optical fiber, a spectrograph and an optical fiber needle. The nanometer opticalfiber and the optical fiber needle are made from ordinary optical fiber, the cost is low, and the processing difficulty is low; by moving the optical fiber needle, the position, in contact with the nanometer optical fiber, of the optical fiber needle is changed, therefore a transmitted spectrum of the nanometer optical fiber can be adjusted, and spectrum adjustment only needs changes of relative positions of the optical fiber needle and the nanometer optical fiber, and spectrum adjustment cannot be influenced by environment conditions such as parameters of temperature, humidity and the like.

Description

technical field [0001] The invention belongs to the technical field of nano-fiber band-pass filters, in particular to a tunable wide-bandwidth nano-fiber band-pass filter. Background technique [0002] Optical fiber waveguides not only have broad applications in network communication, medical treatment, optical fiber sensing and many important fields related to the national economy and people's livelihood, such as semiconductor industry, aerospace, national defense, but also have broad applications in semiconductor research, surface science, quantum physics, and the interaction between light and matter. Disciplines also play an important role. The filter used in the optical fiber system is an optical fiber device that selects or filters out light waves of specific wavelengths from light waves of different wavelengths. Fiber optic filters have important applications in applications such as fiber optic communications, spectral testing, fiber optic sensors, laser optics, atomi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a tunable large-bandwidth nano-fiber bandpass filter, which solves the technical problem that the existing fiber optic bandpass filter cannot be applied to a bandwidth higher than a hundred nanometers, and the bandwidth application range is fixed and cannot be tuned.

Images