Open AccessWideband multimode fiber with an optimized core size and fluorine-doped cladding for high-speed SWDM and CWDM transmission
Author(s) -
Yinping Liu,
Lin Ma,
Wufeng Xiao,
Runhan Wang,
Junjie Xiong,
Jie Luo,
Zuyuan He
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.015433
Subject(s) - multi mode optical fiber , optics , wavelength division multiplexing , materials science , cladding (metalworking) , wideband , bandwidth (computing) , single mode optical fiber , dispersion shifted fiber , optical fiber , wavelength , optoelectronics , fiber optic sensor , computer science , physics , telecommunications , metallurgy
We propose a novel multimode fiber (MMF) with a 30 μm-core and fluorine-doped cladding for both high-speed short wavelength division multiplexing (SWDM) and coarse wavelength division multiplexing (CWDM) transmission. By optimizing the core size, the mode field diameter (MFD) mismatch between the proposed fiber and both the standard single-mode fiber (SMF) and MMF is minimized, which enables the quasi-single mode operation in the CWDM window and a compromised coupling loss with standard MMFs and SMFs. By adopting a fluorine-doped silica cladding, the bandwidth dependence on wavelength of the proposed fiber is minimized, which indicates that the modal bandwidth performance at the longer wavelength can be effectively improved without compromising modal bandwidth at 850 nm. The error-free 100 Gb/s (4×25.78 Gb/s) multimode transmission over 250 meter-long fiber is achieved using a commercially available VCSEL-based SWDM transceiver. The applicable distance can be extended to 300 meters when a biterror rate just below the forward error correction (FEC) threshold of 5×10 -5 is acceptable. Besides, the 100 Gb/s error-free single-mode transmission over 10 km-long fiber was also demonstrated with a commercially available directly modulatedlaser (DML)-based CWDM transceiver. The results imply that the proposed MMF may be useful for large-scale data center applications.