SU1420638A1 - Device for positioning fibrous light guides - Google Patents

Abstract

This invention relates to devices for highly accurate positioning of optical fibers. The goal is to improve the accuracy of alignment using a fiber optic fiber from the fiber. The pattern | с11и) contains two bimorph piezoes. Yumont, connected between co6oii ends through the ime and the daily element. At the end of the second core element there is a carrier of electrical power, and on it at the point of intersection of the lines passing through the centers of the lower elements, there is an attachment unit for the optical fiber. In order for the positioning to take place along two mutually orthogonal coordinates, the indicated lines must be perpendicular. When voltage is applied to bimorphic bad elements, their movable ends and all nodes attached to them rotate around the central points of the bimorphic negative elements. There are various options for the device. 8 z.i. f-ly 6 Il. S (l

Description

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The invention relates to the field of piezoelectric engineering, devices for high-precision positioning of optical fibers with respect to each other, and optical signal receivers and transmitters.

The aim of the invention is to improve the accuracy of the alignment by eliminating the bending of the fiber.

FIG. 1-6 shows variants of the proposed device.

The device for positioning the optical fibers contains bimorph elements 1 and 2, an intermediate element 3 connecting them, a carrier element 4 and a fixing unit for the optical fiber 5, which fixes the optical fiber at point O-i.

The device works as follows.

The fiber is placed at point O ,. A bimorph element 1 is supplied with a control voltage, under its action the bimorph element bends and its moving end and all the nodes attached to it rotate around the center point of the bimorph element 1 - point A, i.e. The fiber light guide moves along the X coordinate, if the control voltage is supplied to bimorph element 2, then its moving end and the nodes attached to it rotate around the center point of the bimorph element 2 - point B, i.e. The fiber light guide moves along the Y coordinate, while due to the absence of bending of the fiber axis, the device alignment accuracy increases.

The device variants shown in FIG. 1-4 are distinguished from one another by the mutual arrangement of the bimorph elements 1 and 2, the shape and size of the intermediate 3 and the carrier 4 elements.

The device variant shown in FIG. 5 is a special case of this type of device in which the bimorph elements 1 and 2 are parts of a single bimorph plate, and the intermediate element 3 is a part of the bimorph plate free from plates.

The device variant shown in FIG. 6, is a device with cylindrical biomorphic elements 1 and 2.

Claims (9)

1. A device for positioning optical fibers containing two bimorph piezo elements, one of which is fixed at one end to the base, and the other through an intermediate element connected to one end of the second bimorph piezoelectric element, to the other end of which there is a non-superal element with a mounting node optical fiber, characterized in that, in order to improve the accuracy of the alignment by eliminating the bending of the optical fiber during positioning, the bimorph piezoelectric elements are arranged so that the planes of their sections, perpendicular to the wide edges and passing through the fastening points of the bimorph piezoelements, are parallel to the positioning plane. 2. A device according to claim 1, characterized in that the intermediate element is connected with the first bimorph piezoelectric element at an obtuse angle, and with the second one - at an acute angle. ABOUT 3. The device according to claim 2, characterized in that, in order to ensure movement along two orthogonal coordinates, the fixing unit of the optical fiber is located at the intersection point of the line passing through 5, the center of the first bimorph piezoelectric element, and the axial line of the second bimorph piezoelectric element, with these lines intersecting at a right angle. 4. The device according to claim 1, characterized in that the intermediate element is connected under 0 is the angle with the first bimorph piezoelectric element, and the second bimorph piezoelectric element is opposed parallel to the intermediate element so that its end, on which the fiber light attachment unit is located, is located at the moving end of the first bimorph piezoelectric element. 5. The device according to claim 4, characterized in that, in order to ensure mutual orthogonality of displacements in two coordinates, the axial lines of bimorphic piezoelectric elements are mutually perpendicular. 6. A device according to claim 1, characterized in that both bimorph piezo elements are parts of the same bimorph plate, and the bimorph plate section free from electrodes is used as an intermediate element. 7. The device according to claim 6, characterized in that, in order to ensure the mutual orthogonality of movement in two coordinates, the node of attachment of the optical fiber 0 is located at the intersection of lines passing through the centers of bimorphic piezoelements at angles оС ,, ot.j to their surfaces that satisfy the condition o., + ° (. 8. The device according to claim 1, characterized in that the bimorph piezoelectric elements are located at an obtuse angle to the surface of the intermediate element. 9. The device according to claim 8, characterized in that, in order to obtain mutual orthogonality of movement along two mutually perpendicular coordinates, the fixing unit of the optical fiber is located at the intersection of the lines passing through the centers of bimorphic piezoelectric elements at ° C and o (g to their surfaces, to the satisfaction of the condition ot, + s g 270 ° -cL, where c is the angle between the axial lines of bimorph piezoelements. five five i /. I X / f A IB J 42.J BUT 2 fie.b