OPTICAL FIBER FOR AMPLIFICATION, OPTICAL AMPLIFIER, AND METHOD FOR CONTROLLING OPTICAL AMPLIFIER
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Feb 17, 2022
filing date -
Feb 17, 2022
priority date (Note) -
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Abstract
An amplification optical fiber according to the present disclosure is an amplification optical fiber doped with a rare earth element, the amplification optical fiber including: a first cladding enclosing cores of the amplification optical fiber; and a second cladding enclosing the first cladding, in which the two or more cores are disposed inside the first cladding in a cross section of the amplification optical fiber, and a core cladding ratio Rcc, which is a ratio of a sum of areas of the two or more cores to a sum of areas of the two or more cores and the first cladding in the cross section of the amplification optical fiber, is 0.0095
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NIPPON TELEGRAPH AND TELEPHONE CORPORATION | CHIYODA-KU TOKYO 100-8116 |
International Classification(s)

- 2022 Application Filing Year
- H01S Class
- 1137 Applications Filed
- 263 Patents Issued To-Date
- 23.14 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
AOZASA, Shinichi | Musashino-shi, Tokyo, JP | 22 | 63 |
# of filed Patents : 22 Total Citations : 63 | |||
IMADA, Ryota | Musashino-shi, Tokyo, JP | 6 | 0 |
# of filed Patents : 6 Total Citations : 0 | |||
NAKAJIMA, Kazuhide | Musashino-shi, Tokyo, JP | 88 | 121 |
# of filed Patents : 88 Total Citations : 121 | |||
SAKAMOTO, Taiji | Musashino-shi, Tokyo, JP | 30 | 40 |
# of filed Patents : 30 Total Citations : 40 |
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- 0 Citation Count
- H01S Class
- 0 % this patent is cited more than
- < 1 Age
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