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1. (WO2018142175) MULTIMODE OPTICAL FIBER OPTIMIZED TO OPERATE AROUND 1060 NM, AND CORRESPONDING MULTIMODE OPTICAL SYSTEM

Pub. No.:    WO/2018/142175    International Application No.:    PCT/IB2017/000216
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Sat Feb 04 00:59:59 CET 2017
IPC: G02B 6/028
G02B 6/036
Applicants: DRAKA COMTEQ FRANCE
Inventors: SILLARD, Pierre
MOLIN, Denis
BIGOT, Marianne
Title: MULTIMODE OPTICAL FIBER OPTIMIZED TO OPERATE AROUND 1060 NM, AND CORRESPONDING MULTIMODE OPTICAL SYSTEM
Abstract:
A multimode optical fiber (10) comprises an a-profile graded index core, a trench (13) surrounding the core (11) and an intermediate cladding (12) between the core and the trench. Such a multimode optical fiber (10) has: - A mode carrying capacity between 54 and 68 LP modes at 1060nm, defined by a specific relationship between the numerical aperture of the core and the core radius, - A defined relationship between trench, core and intermediate cladding parameters to achieve a high bandwidth and low bend-loss at 1060 nm, and - A core radius between 24 and 26μm, a numerical aperture between 0.190 and 0.225 and a value of a between 2.01 and 2.05 to retain compatibility with legacy fibers.