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System for assembling WDM filter assembly for optical amplifier

Imported: 24 Feb '17 | Published: 13 Jan '04

Joong-Wan Park

USPTO - Utility Patents

Abstract

A system of assembling a WDM filter assembly including a filter assembly and a collimator includes a holding means for accepting and holding one of the filter assembly and the collimator, a pivotal means for pivotally moving one which of the filter assembly and the collimator is not held, a detecting means for detecting a signal going through the WDM filter assembly, and a control means for applying a driving signal to drive the pivotal apparatus by using a pin to offset the interfence between materials until the detected siganl is within a predetermined process tollerance, whereby the filter assembly is aligned with the collimator.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

For a more complete understanding of the present invention and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which like reference numerals denote like parts, and in which:

FIG. 1 is an exploded perspective view illustrating a WDM filter assembly according to the preferred embodiment of the present invention;

FIG. 2 is a perspective view illustrating a system of assembling a WDM filter assembly according to the preferred embodiment of the present invention;

FIG. 3 is a perspective view illustrating an alignment module according to the preferred embodiment of the present invention;

FIG. 4 is a graph illustrating a target signal and a detected signal according to the preferred embodiment of the present invention; and

FIGS. 5 and 6 are graphs illustrating a method of assembling the WDM filter assembly according to the preferred embodiment of the present invention.

Claims

1. A system for assembling a WDM filter assembly including a filter assembly and a collimator, comprising:

2. The system of claim 1, further comprising, a signal applying module for applying the signal going through the WDM filter assembly.

3. The system of claim 1, further comprising, a measurement means for displaying a characteristic of the detected signal to compare the detected signal with the target sginal.

4. The system of claim 1, further comprising:

5. The system of claim 4, wherein the collimator is held by the holding means.

6. The system of claim 5, wherein the holding means includes a groove for accepting the collimator and a fixing member for firmly fixing the collimator.

7. The system of claim 5, wherein the holding means is fixed to the x-y movement means.

8. The system of claim 7, wherein the filter assembly has the pin hole, and the pivotal means includes a worm wheel gear formed on a y-axis movement means of the x-y movement means, a worm gear installed such that it is exposed from an opening portion of the pivotal plate to mesh with the worm wheel gear, and a servomotor coupled to the pivotal plate for rotating the worm gear.

9. The system of claim 8, wherein the x-y movement means includes a x-axis movement means, the x-axis movement means moving along a x-axis guide rail, the y-axis movement means moving along the x-axis movement means.

10. The system of claim 9, wherein the holding means is fixed on the y-axis movement means.

11. The system of claim 2, wherein the collimator has an optical fiber, and the signal applying module applies the signal going through the WDM filter assembly through the optical fiber.

12. The system of claim 1, wherein the filter assembly and the collimator are attached by an U.V. curable agent.

13. A method of assembling a WDM filter assembly including a filter assembly and a collimator, the method comprising the steps of:

14. The method according to claim 13, wherein the one of the filter assembly and the collimator is the collimator and the other one of the filter assembly and the collimator is the filter assembly.

15. The method according to claim 13, further comprising the step of locking the filter assembly to the collimator to retain the filter assembly in alignment with the collimator.