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Electric tuning optical attenuator

A technology of optical attenuator and electrical tuning, applied in optics, instruments, optical components, etc., to achieve the effects of low cost, easy manufacture, and reduced production process

Active Publication Date: 2012-11-28
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to propose an electrically tunable optical attenuator structure to solve the electronically controlled tuning problem of the optical attenuator

Method used

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specific Embodiment 1

[0022] The precision casing 1 is made of conductive silicone rubber. This is because the conductive silicone rubber is easy to extrude and can be mass-produced through mold injection molding, and can be used as an electrode; three injection holes are reserved on one side of the sleeve, and a line is engraved on the inner wall of the sleeve. Small slots for positioning and storage of the two fiber collimators. Pin 2 of the left connector or pin 12 of the right connector are drilled and polished by precision machinery of metal copper pillars, because metal copper is a common metal and easy to process; the size of the hole matches the outer diameter of the fiber collimator . When the first conductive liquid 3 and the second conductive liquid 5 are used at low temperatures, there may be freezing problems. High concentration salt solutions can be used to lower the freezing point. 20% concentration of lithium chloride results in a freezing point below -40°C and a density ρ of 1.1...

specific Embodiment 2

[0024] The precision casing is prepared by precision machining of metal copper and copper pillars into a casing and polished. Three small holes are reserved on the wall of the copper casing for liquid injection. The connector pins are made of conductive silicone rubber, and the hollow space is reserved for optical fibers. Due to the flexibility of silicone rubber, it is more convenient to insert and pull out the fiber collimator. The insulating layer is made of parylene with a thickness of 3 microns by vacuum coating. The hydrophobic layer is made of polytetrafluoroethylene polymer material (the English abbreviation is PTFE, and the trade name is Teflon). TeflonAF) coating to achieve. The insulating liquid is bromododecane (density 1.0399, refractive index 1.4583), the first conductive liquid is a saline solution with the same density to remove the influence of gravity; the second conductive liquid is a room temperature ionic liquid, because room temperature ionic liquid Liq...

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Abstract

The invention discloses an electric tuning optical attenuator and relates to an optical attenuator structure for simulating a liquid prism with an adjustable apex angle by using an edge of a varifocal lens based on an electrowetting effect. In the attenuator, a precise sleeve (1) with a cylindrical through hole is used as a main body; and the sleeve is positioned between a left connector pin (2) and a right connector pin (12), so that a structure of an emergent optical fiber collimator (9), the prism with the adjustable apex angle and a receiving optical fiber collimator (10) is formed. When specific initial voltage is applied to the sleeve (1) and the left connector pin (2) or the right connector pin (3), interfacial tension between conducting liquid and a side wall is reduced due to theelectrowetting effect to ensure that the three liquids have a straight strip shape. When the external voltage is changed, the shape of a liquid interface is changed, the apex angle tuning of a lens prism is realized to control the deflection of the light beam, so that optical coupling light intensity is regulated and controlled and the aim of attenuation control over light is fulfilled.

Description

technical field [0001] The invention relates to a novel electrically tuned optical attenuator structure and its working principle, and belongs to the technical fields of optical communication, photoelectric sensing and optical information processing devices. Background technique [0002] The electronically controlled adjustable optical attenuator is one of the important passive devices in the optical communication system. It is widely used in the optical power equalization of each channel of Dense Wavelength Division Multiplexing (DWDM) and the adjustment of the optical signal amplified by the optical fiber amplifier. It can also be used to simulate long-distance optical fiber transmission, dynamic detection of transmission systems, etc. In recent years, micro-opto-electromechanical system dimmable optical attenuators manufactured by micro-mechanical technology have the advantages of small size, light weight, and low energy consumption, and have opened up new methods for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/26G02B26/08
Inventor 陈陶梁忠诚徐荣青徐宁钱晨
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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