Tunable interferometer for filling microstructure optical fiber based on functional material

Abstract

The invention relates to a tunable interferometer based on a microstructure optical fiber packed by functional material which is composed of a double refraction microstructure optical fiber packed by functional material, a control device, a four-port optical directional coupler, a polarization controller and a circulator. The double refraction microstructure optical fiber packed by functional material is arranged in the control device. Both ends of the microstructure optical fiber packed by functional material are respectively connected with the optical directional coupler and the port of the polarization controller. The ports of the optical directional coupler are connected with the circulator. The two ends of the circulator are respectively the inport and the reflection outport of the interferometer; the port b of the optical directional coupler is the transmission output port of the interferometer. The tunable interferometer has the advantages that compared with the optical fiber ring-shaped mirror interferometer, the interferometer has the strongest points of flexible implementation mode, diversity of tuning modes, wide tuning range, achievable electric tuning and the like, can be applied to the manufacture fields of optical devices such as a tuned filter, an optical switch, a variable optical attenuator, etc.

Description

technical field [0001] The invention relates to the technical field of microstructured optical fibers and their applications, in particular to a tunable interferometer based on functional materials filling microstructured optical fibers. Background technique [0002] Microstructure Optical Fiber, also known as Photonic Crystal Fiber or Hole Fiber, is a new type of optical fiber that has developed rapidly in recent years and has high scientific research value and broad market application prospects. Extended air holes are distributed along the fiber axis according to certain rules. Microstructured fibers can be divided into two types according to the light guiding mechanism: index-guided microstructured fibers and photonic bandgap microstructured fibers. The former is similar to the light guiding mechanism of traditional optical fibers. The refractive index of the core is higher than the effective refractive index of the surrounding cladding composed of air holes, and the lig...

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Problems solved by technology

However, as far as we know, there are no literature and patent reports on the microstructure fiber tunable interferometer based on functional material filling.

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