Optical fiber cable

Patent metadata

Field	Value
Publication number	US-9645340-B2
Application number	US-201615294094-A
Country	US
Kind code	B2
Filing date	Oct 14, 2016
Priority date	Apr 1, 2015
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

An optical fiber cable has a sectional area of Ac [mm 2 ] and housing a number N of optical fibers. A transmission loss α dB [dB/km], a mode field diameter W [μm], an effective area Aeff [μm 2 ], an effective length L eff [km], and a wavelength dispersion D [ps/nm/km] of each of the optical fibers at a wavelength of 1550 nm satisfy a predetermined equation and the transmission loss of the optical fiber at the wavelength of 1550 nm is 0.19 dB/km or less, and the effective area of the optical fiber is in a range from 125 to 155 μm 2 .

First claim

What is claimed is:

1. An optical fiber cable having a sectional area of Ac [mm 2 ] and housing a number N of optical fibers,
wherein a transmission loss α dB [dB/km], a mode field diameter W [μm], an effective area Aeff [μm 2 ], an effective length L eff [km], and a wavelength dispersion D [ps/nm/km] of each of the optical fibers at a wavelength of 1550 nm satisfy Equation (1),

log
2

[

1
+

65.9
·

⁢

{

exp
⁡

(

200
·

(

α
dB

+
0.02

4.343

)

)

·

(

20
×
W

W
2

+
104

)

-
4

·

A
eff

-
2

⁢

L
eff

|
D
⁢

|

-
1

⁢

·

asinh
⁡

(

629
·

|
D
|

L
eff

)

}

-

1
3

]

×

N

A
C

≥

0.008
×
N

+
1.7

(
1
)

wherein the transmission loss of the optical fiber at the wavelength of 1550 nm is 0.19 dB/km or less, and the effective area of the optical fiber is in a range from 125 to 155 μm 2 .

2. The optical fiber cable according to claim 1 ,
wherein the mode field diameter of the optical fiber at the wavelength of 1550 nm is in a range from 12.0 to 13.5 μm.

3. The optical fiber cable according to claim 1 ,
wherein the wavelength dispersion of the optical fiber at the wavelength of 1550 nm is in a range from 19 to 22 ps/nm/km.

4. The optical fiber cable according to claim 1 ,
wherein the optical fiber has a cutoff wavelength in a range from 1400 to 1600 nm.

5. The optical fiber cable according to claim 1 ,
wherein the optical fiber comprises:
a core having a diameter in a range from 12 to 15 μm; and
a c

Assignees

• Sumitomo Electric Industries

Inventors

• Yamamoto Yoshinori
• Hirano Masaaki
• Takami Masakazu

Classifications

• G02B6/02266

  Positive dispersion fibres at 1550 nm · CPC title

• G02B6/4409 Primary

  for ribbons · CPC title

• G02B6/4408

  Groove structures in support members to decrease or harmonise transmission losses in ribbon cables · CPC title

• G02B6/03627

  arranged - + · CPC title

• G02B6/02019

  Effective area greater than 90 square microns in the C band, i.e. 1530-1565 nm · CPC title