Single beam splitter transmission-type pohotonic crystal fiber resonant cavity

Abstract

The present invention relates to a single beam splitter transmission-type pohotonic crystal fiber resonant cavity, which comprises a first fiber collimator, a second fiber collimator, a first pohotonic crystal fiber collimator, a second pohotonic crystal fiber collimator, an optical beam splitter, and a fixed device. The first fiber collimator, the second fiber collimator, the first pohotonic crystal fiber collimator, the second pohotonic crystal fiber collimator, and the optical beam splitter are fixed on the fixed device. Pigtails of the first fiber collimator and the second fiber collimator are an input port or an output port seperately; the first pohotonic crystal fiber collimator is connected with the pigtail of the second pohotonic crystal fiber collimator.Only one optical beam splitter and two pohotonic crystal fiber collimator are used to structure a resonant cavity, and the number of devices in the resonant cavity is reduced by half, so that the inner structure of the resonant cavity is simple, the difficulty of the resonant cavity regulation is decreased, and the volume of the resonant cavity is reduced.

Description

technical field [0001] The invention relates to a single-beam splitter transmission photonic crystal fiber resonator cavity, which belongs to the technical field of light interference and optical sensing. Background technique [0002] Optical resonators are research hotspots in the fields of lasers, optical sensing, and inertia. One of the key indicators is clarity or quality factor, which often determines the performance of the entire system. In the resonant optical gyroscope, the definition of the passive resonant cavity determines the limit sensitivity of the gyro, and the non-reciprocal error of the transmissive resonant cavity is smaller than that of the reflective resonant cavity. Therefore, the high-definition transmissive resonant cavity is developed The key to high-precision resonant optical gyroscope. [0003] Photonic crystal fibers have many excellent properties, but they are quite different from traditional optical fibers. Developing high-performance photonic c...

AI Technical Summary

Problems solved by technology

The existing transmission resonator is composed of two optical beam splitters, four fiber collimators and four photonic crystal fiber collimators. Due to the large number of components, it is difficult to adjust the resonator and the loss in the cavity is large, which is not conducive to achieve high definition

In addition, because there are two independent photonic crystal fibers in the resonant cavity of this structure, it is more difficult to wind a photonic crystal fiber ring than to wind only one photonic crystal fiber

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