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Method for realizing optical point joint seal in optical-fiber close-packed array

A technology of line array and optical fiber, which is applied in the field of close connection of light spots in optical fiber dense line array, can solve the problems of complex control circuit, achieve the effect of improving accuracy, reducing positional accuracy, and increasing focal depth

Inactive Publication Date: 2007-03-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is successful, but the control circuit is complicated and cannot solve the problem of short depth of focus of the focused light spot

Method used

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  • Method for realizing optical point joint seal in optical-fiber close-packed array
  • Method for realizing optical point joint seal in optical-fiber close-packed array
  • Method for realizing optical point joint seal in optical-fiber close-packed array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Strip off the coating layer of the single-mode optical fiber;

[0033] 2) The high-power laser is condensed onto the optical fiber through a focusing lens, the heat generated by the laser melts the optical fiber, and a micro-optical fiber with a diameter of 20 microns is obtained by drawing the optical fiber;

[0034] 3) V-shaped grooves with a pitch of 24 microns are etched in parallel on the silicon wafer, and a layer of magnesium fluoride film with a thickness of 0.3-1 micron is plated on the surface of the silicon wafer where the V-shaped grooves are etched; The fiber ends are arranged in parallel and horizontally in the V-shaped groove on the silicon wafer, and then a glass sheet coated with a 0.3-1 micron film on the surface of the micro-fiber array is covered, and the glass sheet and the silicon wafer are fixed by UV glue, as shown in Figure 4. Show.

[0035] 4) Fix the silicon wafer and the standard optical fiber near the transition zone to the base with ultravio...

Embodiment 2

[0038] 1) Strip off the coating layer of the single-mode fiber;

[0039] 2) The high-power laser is condensed onto the optical fiber through a focusing lens, the heat generated by the laser melts the optical fiber, and a micro-optical fiber with a diameter of 10 microns is obtained by drawing the optical fiber;

[0040] 3) On the magnesium fluoride substrate, parallel grooves with an adjacent interval of 13 microns, a width of 8 microns, and a depth of 5 microns are etched on the magnesium fluoride substrate by photolithography and plasma beams, and the micro-fibers are arranged horizontally in parallel in the parallel grooves on the substrate. A magnesium fluoride sheet is covered on the micro-fiber array, and the magnesium fluoride sheet and the substrate are fixed by ultraviolet glue, as shown in Figure 5.

[0041] 4) Fix the magnesium fluoride substrate and the standard optical fiber near the transition zone to the base with ultraviolet glue, and connect the FC interface conne...

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Abstract

The invention discloses a method of the spot joint seal in the optical fiber close-spaced linear array. The process is: 1) one end of the standard single mode optical fiber is draw to the micro optical fiber with diameter of 5-25 mum which includes the standard optical fiber and the transition region; 2) Many micro optical fiber which the end is interval and parallel are lain on the silicon base plate coated the magnesium fluoride on the surface with the V groove or the magnesium fluoride base plate with the rectangle groove; 3) the glass sheet coated the magnesium fluoride on the surface or the magnesium fluoride board is set on the micro optical fiber to form the micro optical fiber close-spaced array fixed with the base plate by the ultraviolet glue; 4) the end of the standard optical fiber is connected with the semiconductor laser by the FC interface and the close-spaced micro optical fiber array outputs the spot array. So the invention can improve the imaging precision of the laser phototypesetting system and the focal depth but decrease the demand of the position precision when the film exposures.

Description

Technical field [0001] The invention relates to a technology for providing optical fiber close-packed line arrays in a laser phototypesetting system, and more particularly relates to a method for realizing light spots in close-packed optical fiber arrays. Background technique [0002] In laser scanning equipment such as laser imagesetters, laser light plotters and direct plate making machines, one of the main solutions to achieve multi-path optical scanning is to use multiple semiconductor lasers and multiple optical fibers to form a line array of light points as The object plane is then imaged on the image plane (film surface) according to a certain proportion through the imaging system, so as to realize multi-channel scanning. [0003] However, due to the structure of ordinary fibers, the light in the fiber is only distributed in a small area in the center. For example, a typical multimode fiber has an outer diameter of 125 microns and a core diameter (light guide part) of 62.5...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/36G02B6/42G02B6/00B41B19/00
Inventor 侯昌伦杨国光
Owner ZHEJIANG UNIV
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