FIBER-OPTIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME

• US 20090113939A1
• Filed: 11/01/2007
• Published: 05/07/2009
• Est. Priority Date: 11/01/2007
• Status: Abandoned Application

• Current Assignee: Moog Incorporated
• Original Assignee: Moog Incorporated
• Inventors: Crumpton, Eric
• Application Number:
  US11/933,615
• Publication Number:
  US 20090113939A1
• Time in Patent Office: Days
• US Class Current: 65/385
• CPC Class Codes: G02B 6/293 with wavelength selective means
• CPC Class Codes: G02B 6/3816 for use under water, high pressure connectors provisionally see G02B6/4428
• CPC Class Codes: G02B 6/4239 Adhesive bonding; Encapsulation with polymer material
• CPC Class Codes: G02B 6/4248 Feed-through connections for the hermetical passage of fibres through a package wall see provisionally also G02B6/4428

Abstract

A fiber-optic component comprises a hollow casing defining an enclosed cavity therewithin, a fiber-optic unit disposed within the cavity, and a potting compound filling the cavity in the casing and encapsulating the fiber-optic unit of the fiber-optic component. The potting material has a compressive strength allowing the fiber-optic component to withstand pressure of up to 14,000 psi. A method for manufacturing the fiber-optic component comprises the steps of: providing the casing with the enclosed cavity therewithin, inserting the fiber-optic unit into the cavity, providing the potting material, and introducing the potting material into the cavity so that a space around the fiber-optic unit is filled with the potting material to encapsulate the fiber-optic unit.

Claims

1. A method for manufacturing a fiber-optic component, said method comprising the steps of:

a) providing a casing defining an enclosed cavity therewithin;

b) inserting a fiber-optic unit into said cavity;

c) providing a potting material; and

d) introducing said potting material into said cavity so that a space around said fiber-optic unit being filled with said potting material to encapsulate said fiber-optic unit;

said potting material having said compressive strength allowing said fiber-optic component to withstand pressure of up to 14,000 psi.

2. The method for manufacturing said fiber-optic component as defined in claim 1, wherein said step of providing said potting material includes the step of degassing said potting material so as to make said potting material substantially free of air bubbles.

3. The method for manufacturing said fiber-optic component as defined in claim 2, wherein the step of degassing said potting material includes the step of vacuuming said potting material in a vacuum chamber by a vacuum pump.

4. The method for manufacturing said fiber-optic component as defined in claim 3, wherein said compressive strength of said potting material after the step of degassing said potting material is at least 8,000 psi.

5. The method for manufacturing said fiber-optic component as defined in claim 1, wherein the step of providing said casing includes the step of providing an access opening in said casing.

6. The method for manufacturing said fiber-optic component as defined in claim 5, wherein step of introducing said potting material into said cavity is conducted through said access opening.

7. The method for manufacturing said fiber-optic component as defined in claim 2, further comprising the step of additional degassing of said potting material within said casing subsequent to the step of introducing said potting material into said cavity.

8. The method for manufacturing said fiber-optic component as defined in claim 7, wherein the step of additional degassing of said potting material includes the step of vacuuming said potting material in a vacuum chamber by a vacuum pump.

9. The method for manufacturing said fiber-optic component as defined in claim 1, further comprising the step of curing said potting material in said casing in order to harden said potting material subsequent to the step of introducing said potting material into said cavity.

10. The method for manufacturing said fiber-optic component as defined in claim 9, wherein said step of curing said potting material includes the step of heating said fiber-optic component in order to cure and harden said potting material in said casing.

11. The method for manufacturing said fiber-optic component as defined in claim 9, further comprising the step of testing said fiber-optic component under fluid pressure of about 14,000 psi subsequent to the step of curing said potting material.

12. The method for manufacturing said fiber-optic component as defined in claim 9, wherein said compressive strength of said potting material hardened subsequent to the step of curing said potting material in said casing is at least 8,000 psi.

13. The method for manufacturing said fiber-optic component as defined in claim 1, wherein said fiber-optic unit is one of a wavelength-division multiplexer, a band splitter and an optical splitter.

14. The method for manufacturing said fiber-optic component as defined in claim 9, further comprising the step of placing said fiber-optic component in a pressure chamber defined in a pressure-compensated housing entirely filled with a liquid.

15. A fiber-optic component comprising:

a hollow casing defining an enclosed cavity therewithin;

a fiber-optic unit disposed within said cavity; and

a potting compound filling said cavity in said casing and encapsulating said fiber-optic unit;

said potting material having a compressive strength allowing said fiber-optic component to withstand pressure of up to 14,000 psi.

16. The fiber-optic component as defined in claim 15, wherein said compressive strength of said potting material is at least 8,000 psi.

17. The fiber-optic component as defined in claim 16, wherein said potting material is substantially free of air bubbles.

18. The fiber-optic component as defined in claim 17, wherein said potting material is degassed prior to filling said cavity in said casing.

19. The fiber-optic component as defined in claim 18, wherein said degassing of said potting material was conducted in a vacuum chamber by a vacuum pump.

20. The fiber-optic component as defined in claim 15, wherein said fiber-optic unit is one of a wavelength-division multiplexer, a band splitter and an optical splitter.

21. The fiber-optic component as defined in claim 15, wherein said hollow casing is provided with an access opening for inserting a fiber-optic unit into said cavity and introducing said potting material into said cavity so that a space around said fiber-optic unit is filled with said potting material to encapsulate said fiber-optic unit.

22. The fiber-optic component as defined in claim 15, wherein said fiber-optic component is disposed in a pressure chamber defined in a pressure-compensated housing entirely filled with a liquid.

23. The fiber-optic component as defined in claim 22, wherein said pressure chamber is hydraulically connected to a pressure compartment;

said pressure compartment is in fluid communication with external pressure.