Ultrasonic driving optical-fiber winding filter

Abstract

The invention relates to an ultrasonic driving optical-fiber winding filter, solving the problems that the traditional ultrasonic optical-fiber narrow-band filter has large space occupation, and an ultrasonic driving pyramid only can drive single optical fiber. The ultrasonic driving optical-fiber winding filter comprises a wedge-shaped ultrasonic amplitude transformer, a piezoelectric driver (an ultrasonic transducer), a sound absorbing material and an optical-fiber winding, wherein the piezoelectric driver (the ultrasonic transducer) is bonded at the bottom of the wedge-shaped ultrasonic amplitude transformer, the sound absorbing material is bonded at the bottom of the piezoelectric driver, and the optical-fiber winding is bonded to a wedge-shaped pyramid cutting edge. The ultrasonic driving optical-fiber winding filter filters light waves with a specific wavelength, which is transmitted in optical fiber, solves the defects that the traditional ultrasonic driving optical-fiber filter is easy to break off and damage, and the ultrasonic driving pyramid is not easy to process and maintains the fundamental characteristics of the general ultrasonic driving optical-fiber filter and realizes adjustable filtering position and adjustable filtering intensity, and therefore, the ultrasonic driving optical-fiber winding filter can be directly applied to an optical-fiber access.

Description

【Technical field】: [0001] The invention is a new driving mode for an ultrasonically driven optical fiber tunable filter, belonging to the field of optical communication. 【Background technique】: [0002] In the field of optical communication, various filters are required to meet the needs of wavelength multiplexing in optical communication. Ultrasonic-driven fiber optic filters have many advantages [1, 2], that is, the filter position can be adjusted, the filter intensity can be adjusted, and it can be directly connected to the fiber optic channel. [0003] However, the general ultrasonic driving method is to drive a single optical fiber, that is, the ultrasonic wave is generated by piezoelectric ceramics, and the energy is collected by the ultrasonic concentrator in the shape of a horn mouth (ie, a cone), and then the ultrasonic wave is transmitted through the adhesive. single fiber [3]. [0004] Ultrasonic waves propagate in the medium, causing the density of the medium t...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems that the existing ultrasonic-driven optical fiber narrow-band filter occupies a large space, the ultrasonic pyramid can only drive a single optical fiber, the optical fiber filter is easily broken and damaged, and the processing is difficult, and provides an ultrasonic-driven optical fiber winding filter device

[0009] The present invention redesigns the wedge-shaped ultrasonic concentrator, and the new filter is driven by the wedge-shaped concentrator to drive the fiber winding to solve the problem that a single bare fiber is easy to break

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