Miniature magneto-optical fiber switch

Abstract

The invention discloses a miniature magneto-optical fiber switch, consisting of a miniature three-fiber collimator, a miniature current coil and a miniature space light processing optical kernel. Theminiature fiber switch with a 1*2 structure and a 2*1 structure is realized by controlling the current direction of the current coil, and the input and output fibers of the miniature magneto-optical fiber switch are located on the same side. The scheme of the invention adopts the three-fiber collimator and the miniature space light processing optical kernel, realizes the micro-structured magneto-optical fiber switch which can simultaneously implement various switching working modes, and has the advantages of multiple working modes, simple structure, ultra-small size, low insertion loss, low polarization-dependent loss, single-sided fiber output, ultra-high channel switching repeatability and ultra-high lifetime.

Description

technical field [0001] The invention belongs to the technical field of optics and optical fiber communication, and in particular relates to a miniature magneto-optical optical fiber switch. Background technique [0002] A fiber optic switch is an optical device used in an optical system to switch between one or more input fiber ports and one or more output ports; a fiber optic switch is used in a fiber optic communication system to connect and disconnect The transmission optical channel for information loading provides functions such as network protection, link cross-connection, and add-drop multiplexing; optical fiber switches can also be used to make light sources generate pulsed optical signals, such as lasers, or use optical fiber switch modulation to load information or cut off optical fiber channels to realize its related functions. [0003] A simple type of fiber optic switch is a 1×2 fiber optic switch that provides optical switching between one input port and two o...

AI Technical Summary

Problems solved by technology

For example, the mechanical optical fiber switch is currently the most widely used optical fiber port switching device. It has very small insertion loss and crosstalk characteristics, but its switching time is limited to within milliseconds, and the device itself is bulky; other optical switches using MEMS, Mechanisms such as thermo-optical switch and liquid crystal optical switch technology, the switch response speed is relatively slow, generally in the order of milliseconds; the optical fiber switch speed realized by magneto-optical technology and acousto-optic technology can be tens of microseconds to hundreds of microseconds. Microseconds; while semiconductor electro-optic switching speed can reach nanoseconds, but there are defects such as polarization dependence and waveguide coupling loss.

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