Title:
Bending-resistant multi-mode optical fiber that suppresses the effects of leakage mode
Document Type and Number:
Japanese Patent JP6363703
Kind Code:
B2
Abstract:
A multimode optical fiber is provides, which includes an optical core and an optical cladding surrounding the optical core. The optical core has a refractive graded-index profile. The optical cladding includes: an inner layer surrounding the optical core, an intermediate layer, called a “depressed trench”, surrounding the inner layer, and an outer layer surrounding the depressed trench and having a constant refractive index. The depressed trench has a width W and a negative refractive index difference Δnt with respect to the outer layer, and is designed so as to satisfy the following inequality: |0.585677−114.681×S+13.7287×S2+18.7343×S×W−4.61112×S×Δnt·103−0.913789×W×Δnt·103|+2×W×Δnt·103<−30 wherein: S is the width of the inner cladding, which is included between 0.6 μm and 1.6 μm; Δnt is included between −11.10−3 and −4.10−3; and W×Δnt·103 is lower than −25 μm.
Inventors:
Moran, Dennis
Bigo-Astrük, Ariane
Cilar, Pierre
Ahaten, Franciscus, Johannes
Bigo-Astrük, Ariane
Cilar, Pierre
Ahaten, Franciscus, Johannes
Application Number:
JP2016522280A
Publication Date:
July 25, 2018
Filing Date:
June 26, 2013
Export Citation:
Assignee:
Draca Comtech BV
International Classes:
G02B6/036; G02B6/028
Domestic Patent References:
| JP2011059687A | ||||
| JP2011133875A | ||||
| JP2012208497A |
Foreign References:
| US20130034322 | ||||
| WO2013003016A1 |
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Arihara Koichi
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Previous Patent: Bicyclyl substitution iso thiazoline compound
Next Patent: PRODUCTION OF HOMOPOLYMER AND COPOLYMER OF PROPYLENE
Next Patent: PRODUCTION OF HOMOPOLYMER AND COPOLYMER OF PROPYLENE