Magnetic attracted plane reflective mirror optical valves

Abstract

An optic switch with magnetic absorption for planar reflecting mirror achieves switching optic circuit through translation of the planar reflecting mirror. Adopting the positioning technology with high accuracy for magnetic absorption of planar reflecting mirror, a magnetic acting force from a permanent magnetic field is applied in the direction perpendicular to the reflecting surface of the planar reflecting mirror so as to absorb the planar reflecting mirror on a fixed reference plane to ensure the reflecting surface of the planar reflecting mirror to be always on a same plane whether during a motional process or a standstill state; the planar reflecting mirror is inserted into or drawn out from the optic circuit to achieve switching the optic circuit using electro-magnetic driving in push-pull form, forming 1X2 or 2X2 mechanical optic switch.

Description

Technical field: [0001] The invention relates to a mechanical optical switch, in particular to a high-precision positioning optical switch with a magnetic absorption plane mirror. Background technique: [0002] The core technology of the new-generation all-optical network is all-optical switching. Optical switches are key components in all-optical switching. They are mainly used to implement functions such as routing at the all-optical layer, optical cross-connections, and self-healing protection. There are also a large number of applications in optical measurement. As far as the status quo of optical switches is concerned, they are classified according to the switching mechanism, mainly including mechanical optical switches, thermo-optical switches and electro-optical switches. Mechanical optical switches have better performance than other types of optical switches in terms of insertion loss, isolation, extinction ratio, and polarization sensitivity. At present, compared with ot...

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Problems solved by technology

The disadvantage of this optical switch is that the limit mechanism is complicated, which increases the difficulty of installation and manufacture, and the repeatability is poor (0.2dB).

Another example: Chinese patent "a kind of mechanical optical switch" (patent number: CN 2446528Y, publication date: September 5, 2001), the outgoing and incident optical fiber collimators of this optical switch are all at one end, and the collimator and A prism is set between the fixed reflectors, and the movable reflector is set between the fixed prism and the fixed reflector, and is fixed on the connecting rod connected with the current collector. The corresponding rotating device realizes the movement of the movable reflector, thereby changing the optical path and realizing a multi-channel optical switch. The disadvantage of this optical switch is that the light beam needs to be coupled through the prism and the reflector, resulting in high additional insertion loss. The transmission mechanism drives the plane reflector to switch the optical path. The mechanical structure is complex, the repeatability is poor, and there is no self-locking function, the power consumption is high, and the assembly is difficult when forming a multi-channel optical switch.

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