Cable with lubricated optical fibers and process of lubricating optical fibers

• US 6,317,543 B1
• Filed: 11/19/1999
• Issued: 11/13/2001
• Est. Priority Date: 11/19/1999
• Status: Expired due to Fees

• Current Assignee: Fitel USA Corporation (Furukawa Electric Company Limited)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Sheu, Jim J.
• Primary Examiner(s): NGO, HUNG NHAT
• Application Number:
  US09/443,816
• Time in Patent Office: 725 Days
• Field of Search: 385/100-114, 385/128, 427/163.2
• US Class Current: 385/114
• CPC Class Codes: G02B 6/4411 Matrix structure
• CPC Class Codes: G02B 6/4433 Double reinforcement laying in straight line with optical transmission element
• CPC Class Codes: G02B 6/4483 Injection or filling devices

Abstract

A family of oil or fluid-based lubricants with an additive, for use in fabricating optical fiber cables having loose fibers or stacked optical fiber ribbons is disclosed. The additive, which can be either fumed silica, fumed alumina, or block polymers, lowers the surface tension and contact angle, and increases the viscosity and wettability of the lubricants.

Claims

1. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

2. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive lowers the contact angle of said lubricant;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

3. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive decreases surface tension of said lubricant;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

4. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive both lowers the contact angle of said lubricant and decreases surface tension of said lubricant;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

5. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive comprises silica;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

6. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive comprises alumina;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

7. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive comprises block polymers;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

8. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said additive is selected from the group consisting of;

fumed silica, fumed alumina, and block polymers;

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

9. A dry core fiber optic cable comprising

optical fibers having a coating, said coating comprising

lubricant, and

an additive for said lubricant,

said fibers being pressed together in manner that allows said lubricant to bond said fibers together in a single stack.

10. The process of preparing optical fibers for loading into a dry core cable comprising the steps of:

exposing optical fibers to a lubricant-dispensing device;

coating the fibers with a lubricant and an additive for said lubricant, wherein said lubricant is selected from the group consisting of;

polyalphaolefin oil, mineral oil, synthetic hydrocarbon oil, polyalkane glycol, chlorinated paraffin oil, polymerized ester, polysilane oil, polysiloxane oil, petroleum based oil, triglyceride-based vegetable oil, block polymers, and silicone fluid; and

pressing the fibers together in a manner that allows said lubricant to bond the fibers together in a single stack.

11. The process of claim 10, wherein said additive is selected from the group consisting of:

fumed silica, fumed alumina, and block polymers.

12. The process of claim 10, wherein said additive lowers the contact angle of said lubricant.

13. The process of claim 10, wherein said additive decreases surface tension of said lubricant.

14. The process of claim 10, wherein said additive both lowers the contact angle of said lubricant and decreases surface tension of said lubricant.

15. The process of claim 10, wherein said additive comprises silica.

16. The process of claim 10, wherein said additive comprises alumna.

17. The process of claim 10, wherein said additive comprises block polymers.