High fiber count undersea cable

Patent metadata

Field	Value
Publication number	US-11977267-B2
Application number	US-202217676143-A
Country	US
Kind code	B2
Filing date	Feb 19, 2022
Priority date	Mar 5, 2021
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Disclosed are approaches for forming a semiconductor device. In some embodiments, a method may include providing a patterned hardmask over a substrate, and providing, from an ion source, a plasma treatment to a first section of the patterned hardmask, wherein a second section of the patterned hardmask does not receive the plasma treatment. The method may further include etching the substrate to form a plurality of fins in the substrate, wherein the first section of the patterned hardmask is etched faster than the second section of the patterned hardmask.

First claim

What is claimed is:

1. An optical cable comprising:
a hollow buffer tube having a plurality of optical fibers therein, wherein the plurality of optical fibers comprises greater than twenty-four optical fibers;
a water-blockable buffering gel disposed in the hollow buffer tube, wherein the hollow buffer tube is made from a plastic material and has a wall thickness less than 0.38 millimeters (mm), and wherein the water-blockable buffering gel has a viscosity of less than 23,000 centipoise (cps); and
a plurality of layered strength members surrounding the hollow buffer tube, wherein a total number of the plurality of optical fibers is greater than a total number of the plurality of layered strength members.

2. The optical cable of claim 1 , wherein the plurality of optical fibers comprises forty-eight optical fibers.

3. The optical cable of claim 1 , further comprising:
a first plurality of layered strength members of the plurality of layered strength members surrounding the hollow buffer tube;
a conductor surrounding the first plurality of layered strength members; and
an outer jacket surrounding the conductor.

4. The optical cable of claim 3 , further comprising a second plurality of layered strength members of the plurality of layered strength members surrounding the hollow buffer tube, wherein each of the first plurality of strength members has a first diameter, and wherein each of the second plurality of strength members has a second diameter, different than the first diameter.

5. The optical cable of claim 3 , wherein the conductor is directly adjacent the outer jacket.

6. The optical cable of claim 1 , wherein the water-blockable buffering gel surrounds the plurality of optical fibers.

7. An optical communication system comprising:
a set of terminals; and
a pair of unidirectional optical paths, wherein each unidirectional optical path of the pair of unidirectional optical paths comprises an optical cable, and wherein the optical cable comprises:
a hollow buffer tube having a plurality of optical fibers therein, wherein the plurality of optical fibers comprises greater than twenty-four optical fibers;
a water-blockable buffering gel disposed in the hollow buffer tube, wherein the hollow buffer tube is made from a plastic material and has a wall thickness less than 0.38 millimeters (mm), and wherein the water-blockable buffering gel has a viscosity of less than 23,000 centipoise (cps); and
a plurality of layered strength members surrounding the hollow buffer tube, wherein a total number of the plurality of optical fibers is greater than a total number of the plurality of layered strength members.

8. The optical communication system of claim 7 , wherein the plurality of optical fibers comprises between twenty-five and forty-eight optical fibers.

9. The optical communication system of claim 7 , wherein the optical cable further comprises:
a first plurality of layered strength members of the plurality of layered strength members surrounding the hollow buffer tube;
a conductor surrounding the first plurality of layered strength members; and
an outer jacket surrounding the conductor.

10. The optical communication system of claim 9 , wherein the optical cable further comprises a second plurality of layered strength members of the plurality of layered strength members surrounding the hollow buffer tube, wherein each of the first plurality of strength members has a first diameter, and wherein each of the second plurality of strength members has a second diameter, different than the first diameter.

11. The optical communication system of claim 9 , wherein the conductor is directly adjacent the outer jacket.

12. The optical communication system of claim 7 , wherein the water-blockable buffering gel surrounds the plurality of optical fibers.

13. An undersea optical cable:
a hollow buffer tube having a plurality of optical fibers therein, wherein the plurality of optical fibers comprises between twenty-five optical fibers and forty-eight optical fibers;
a water-blockable buffering gel disposed about the plurality of optical fibers within the hollow buffer tube, wherein the hollow buffer tube is made from a plastic material and has a wall thickness less than 0.38 millimeters (mm), and wherein the water-blockable buffering gel has a viscosity of less than 23,000 centipoise (cps); and
a plurality of layered strength members surrounding the hollow buffer tube, wherein a total number of the plurality of optical fibers is greater than a total number of the plurality of layered strength members.

14. The undersea optical cable of claim 13 , further comprising:
a first plurality of layered strength members of the plurality of layered strength members surrounding the hollow buffer tube;
a conductor surrounding the first plurality of layered strength members; and
an outer jacket surrounding the conductor.

15. The undersea optical cable of claim 14 , further comprising a second plurality of layered strength members of the plurality of layered strength members surrounding the hollow buffer tube, wherein each of the first plurality of strength members has a first diameter, and wherein each of the second plurality of strength members has a second diameter, different than the first diameter.

16. The undersea optical cable of claim 14 , wherein the water-blockable buffering gel is in direct contact with the hollow buffer tube, wherein the plurality of optical fibers are in direct contact with the water-blockable buffering gel, wherein the first and second plurality of layered strength members are in direct contact with hollow buffer tube and the conductor, and wherein the conductor is in direct contact with the outer jacket.

Assignees

• Subcom Llc

Inventors

• Spalding Marsha Ann
• Rue Ralph J

Classifications

• G02B6/4416

  Heterogeneous cables · CPC title

• G02B6/44384 Primary

  the means comprising water blocking or hydrophobic materials (G02B6/4439, G02B6/4479 take precedence) · CPC title

• G02B6/4427 Primary

  Pressure resistant cables, e.g. undersea cables · CPC title

• H04B10/25

  Arrangements specific to fibre transmission · CPC title

• H01B3/441 Primary

  from alkenes · CPC title