Method for grouping of optical fibres

Patent metadata

Field	Value
Publication number	US-11353673-B2
Application number	US-202016801536-A
Country	US
Kind code	B2
Filing date	Feb 26, 2020
Priority date	Aug 28, 2019
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

Present disclosure provides a method for grouping of a plurality of optical fibers using first coating layer and magnetic coating layer. The method of the present disclosure includes the step of coating of each of the plurality of optical fibers with a first coating layer and the step of coating of each of the plurality of optical fibers with a magnetic coating layer. Further, the method includes the step of applying magnetic field over the plurality of optical fibers for grouping of the plurality of optical fibers in a predefined manner. Furthermore, the first coating layer serves as a shock absorber to protect the plurality of optical fibers from physical damage.

First claim

What is claimed is:

1. A method for grouping of a plurality of optical fibers, wherein the plurality of optical fibers is coated with a magnetic coating layer, the method comprising:
applying magnetic field to the plurality of optical fibers to arrange the plurality of optical fibers in a predefined arrangement, wherein the magnetic coating layer eliminates requirement of adhesive material for the grouping of the plurality of optical fibers.

2. The method as claimed in claim 1 , wherein the magnetic coating layer consists of magnetic material properties and after coating the plurality of optical fibers with the magnetic coating later, the plurality of optical fibers are placed in one plane where adjacent fibers attract each other to form a ribbon-like structure.

3. The method as claimed in claim 1 , wherein at a time of splicing, a magnetic generator at cable termination magnetizes splice holder for grouping the plurality of optical fibers together which in turn leads to better efficiency and reliability of magnetic bonds between any two adjacent fibers.

4. The method as claimed in claim 1 , wherein the magnetic field applied for the grouping of the plurality of optical fibers is in a range of 0.05 tesla to 60 tesla.

5. The method as claimed in claim 1 , wherein thickness of the magnetic coating layer is in a range of 10 microns to 70 microns.

6. The method as claimed in claim 1 , wherein the magnetic field is applied to the plurality of optical fibers to arrange the plurality of optical fibers in the predefined arrangement to form a ribbon-like structure.

7. The method as claimed in claim 1 , wherein the magnetic coating layer has magnetic ink, wherein composition of the magnetic ink is 10% to 20% of magnetic iron oxide by weight with pigment dispersion and dopants.

8. The method as claimed in claim 1 , wherein the grouping of the plurality of optical fibers in the predefined arrangement signifies arranging the plurality of optical fibers in parallel.

9. An optical fiber comprising:
a core;
a cladding, wherein the cladding surrounds the core; and
a magnetic coating layer, wherein the magnetic coating layer has magnetic ink, wherein the magnetic coating layer is defined by high dispersion and high magneto-electric response.

10. The optical fiber as claimed in claim 9 , wherein the optical fiber further comprises:
at least one of a first coating layer, and the magnetic coating layer, wherein the first coating layer is coated over the cladding, wherein the magnetic coating layer surrounds the first coating layer.

11. The optical fiber as claimed in claim 10 , wherein the first coating layer is coated with the magnetic ink.

12. The optical fiber as claimed claim 9 , wherein the magnetic ink is made of one of iron oxide, ferrous material, an aqueous MICR inkjet ink, traces of dia, para and ferro magnetic substances.

13. The optical fiber as claimed in claim 9 , wherein thickness of the magnetic coating layer is in a range of 10 microns to 70 microns.

14. The optical fiber as claimed in claim 9 , wherein composition of the magnetic ink is 10% to 20% of magnetic iron oxide by weight with pigment dispersion and dopants.

15. The optical fiber as claimed in claim 9 , wherein the magnetic coating layer facilitates identification of the optical fiber without any extra color coating layer.

16. An optical fiber comprising:
a core;
a cladding, wherein the cladding surrounds the core; and
a magnetic coating layer over the cladding, wherein the magnetic coating layer has magnetic ink, wherein the magnetic coating layer is defined by high dispersion and high magneto-electric response.

17. The optical fiber as claimed in claim 16 , wherein the magnetic ink has one of iron oxide, ferrous material, an aqueous MICR inkjet ink, traces of dia, para and ferro magnetic substances.

18. The optical fiber as claimed in claim 16 , wherein thickness of the magnetic coating layer is in a range of 10 microns to 70 microns.

19. The optical fiber as claimed in claim 16 , wherein composition of the magnetic ink is 10% to 20% of magnetic iron oxide by weight with pigment dispersion and dopants.

Assignees

• Sterlite Tech Ltd

Inventors

• Kondapalli Hemanth

Classifications

• G02B6/2555

  Alignment or adjustment devices for aligning prior to splicing · CPC title

• G02B6/562

  locatable, e.g. using magnetic means · CPC title

• G02B6/443

  Protective covering · CPC title

• G02B6/02395 Primary

  Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture (G02B6/02052, G02B6/02057, G02B6/024, G02B6/032, G02B6/105, G02B6/14 take precedence; coating on fibre gratings G02B6/02104; multilayer core or cladding G02B6/036; reinforcing splice joints G02B6/2558; optical cables, i.e. comprising protective structures external to the protective coating such as a jacket or plural coated optical fibres G02B6/44; coating of glass to obtain optical fibres C03C25/104) · CPC title

• H01F1/047

  Alloys characterised by their composition · CPC title