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Apparatus and method for heating protection unit of optical fibre welded parts

A technology for heating devices and protecting components, which is applied in the direction of optical elements, coupling of optical waveguides, light guides, etc., and can solve the problems that the power of the excitation heater cannot be further increased, and the heater cannot be used.

Inactive Publication Date: 2004-08-25
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the lower limit of the resistance of the heater of the heating device is 4.5Ω, and a heater with a resistance less than 4.5Ω cannot be used
Also, in order to reduce the time required for heating and cooling, the power used to energize the heater cannot be increased further

Method used

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  • Apparatus and method for heating protection unit of optical fibre welded parts
  • Apparatus and method for heating protection unit of optical fibre welded parts
  • Apparatus and method for heating protection unit of optical fibre welded parts

Examples

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Embodiment Construction

[0059] 1 and 2 show four types of heaters used in a heating device according to the present invention. Figure 1A and Figure 2A is the plan view representing the heater, while Figure 1B , Figure 2B , Figure 2C and Figure 2D It is a longitudinal view which shows a heater. In Fig. 1 and Fig. 2, the reference numeral 1 represents the distribution diagram of the first heating wire; the reference numeral 2, 2a and 2b represent the distribution diagram of the second heating wire; the reference numeral 3, 3a and 3b represent the plate-shaped part; the reference numeral 4 represents the first temperature sensor ; Reference numerals 5 a and 5 b denote second temperature sensors; and reference numerals 6 and 6 ′ denote heaters. Such as Figure 1A and Figure 2A As shown, the dashed lines represent the arrangement of the first heating wire profile 1 or the second heating wire profile 2, 2a and 2b.

[0060] Figure 1A and Figure 1B The shown heater 6 consists of first heat...

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Abstract

A heating apparatus includes a heater which includes a first heating conductor pattern, a second heating conductor patterns and an elongated plate-shaped member made of heat-resistive and insulated material. The first heating conductor pattern is disposed in the central portion in a longitudinal direction of the plate-shaped member . The second heating conductor patterns are disposed in both end portions of the plate-shaped member in the longitudinal direction. The first heating conductor pattern and the second heating conductor patterns are independently controlled their temperature. Current is first fed to the first heating conductor pattern, and the current feeding is stopped, and current is then fed to the second heating conductor patterns . Accordingly, the protective member placed on and along the heater is gradually heated from the center to both ends.

Description

technical field [0001] The invention relates to a device and a method for heating a protective member protecting a fused portion of an optical fiber. Background technique [0002] Two coated optical fibers are permanently spliced ​​to each other in such a way that the coating at the end of each coated optical fiber is removed to expose its glass fibers (hereinafter referred to as "optical fibers"), and such that The exposed fibers are aligned, spliced ​​end-to-end, and fused together. The exposed portion of the optical fiber including the fused portion is covered with a protective member so as to be protected. Fig. 8 and Fig. 9 are schematic diagrams showing respective protective members for the fusion-spliced ​​portion of the optical fiber. Figure 8A and Figure 9A Fig. 8B and Fig. 9B are longitudinal sectional views of the protective member. [0003] In Figs. 8 and 9, reference numerals 10 and 10' designate protective members; reference numerals 11 and 11' designate ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/255G02B6/38
CPCG02B6/2558G02B6/255
Inventor 渡邉勤鳥居賢一
Owner SUMITOMO ELECTRIC IND LTD