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Electric tuning optical attenuator

A technology of optical attenuator and electrical tuning, which is applied in the direction of optics, instruments, optical components, etc., to achieve the effect of reducing the production process

Active Publication Date: 2010-07-28
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 a novel electrically tuned optical attenuator structure to solve the electronically controlled tuning problem of the optical attenuator

Method used

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  • Electric tuning optical attenuator
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Examples

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Embodiment 1

[0017] 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 13 are reserved on one side of the casing. The pin 2 or 12 of the other electrode connector is made of a metal copper column precision machined and polished, because metal copper is a common metal and easy to process; the size of the hole matches the outer diameter of the input optical fiber 9 and output optical fiber 10 . Conductive Fluid 3 or 5 may have freezing problems when used at low temperatures. High concentration salt solutions can be used to lower the freezing point. In order to maintain the low density and refractive index of the brine, a low atomic weight salt is used: lithium chloride. Lithium chloride at a concentration of 20% results in a freezing point below -40°C, a density ρ of 1.12kg / m3, and a refractive index of...

Embodiment 2

[0020] 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 fluid injection. The connector pins are made of conductive silicone rubber, and the hollow space is reserved for the optical fiber. Due to the flexibility of the silicone rubber, the insertion and extraction of the optical fiber is more convenient. The transparent substrate still uses a high-performance cover glass. 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). , Teflon@AF) coating to achieve. In order to simplify the manufacturing process, the first low-refractive-index fluid can be made into a cured lens by using ultraviolet or visible light curable glue. The insulating fluid is bromododecane (densit...

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Abstract

An electric tuning optical attenuator relates to an optical attenuator structure which is based on electric wetting effect and comprises a variable focus lens. The optical attenuator takes a precise sleeve with a cylindrical through hole as a main body; and the sleeve is positioned between a left connector base pin (2) and a right connector base pin (12). A lens cavity is formed by a gap among the sleeve, the left connector base pin (2) and the right connector base pin (12) and is used for storing liquid lens material; three types of insoluble liquids, namely a first low refractive index liquid (3), a high refractive index liquid (4) and a second low refractive index liquid (5), are placed in the lens cavity; a double-lens medium is formed by the three types of insoluble liquid; one of orboth the first low refractive index liquid (3) and the second low refractive index liquid (5) is (are) conducting fluid; the sleeve is made of conducting materials and taken as an electrode; another electrode or two electrodes is (are) the left connector base pin (2) and the right connector base pin (12) made of conducting materials.

Description

technical field [0001] The invention relates to a novel electrically tuned optical attenuator structure, which belongs to the technical field 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 design and production of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/02
Inventor 梁忠诚陈陶钱晨徐宁杨鹏李菁信恒杰
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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