Few-mode fiber technology for mode division multiplexing

被引：23

作者：

Mori, Takayoshi ^{[1
]}

Sakamoto, Taiji ^{[1
]}

Wada, Masaki ^{[1
]}

Yamamoto, Takashi ^{[1
]}

Nakajima, Kazuhide ^{[1
]}

机构：

[1] NTT Corp, NTT Access Network Serv Syst Labs, Tokyo, Japan

来源：

OPTICAL FIBER TECHNOLOGY | 2017年 / 35卷

关键词：

Few-mode fiber; Mode division multiplexing; Differential mode delay; OPTICAL MIMO TRANSMISSION; MULTIMODE FIBER; LOW-DMD; LINE;

D O I：

10.1016/j.yofte.2016.07.011

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We review recent progress on few-mode fiber (FMF) technologies for mode-division multiplexing (MDM) transmission. First, we introduce fibers for use without and with multiple-input multiple-output (MIMO) digital signal processing (DSP) to compensate for modal crosstalk, and briefly report recent work on FMF for use without/with a MIMO DSP system. We next discuss in detail a fiber for MIMO transmission systems, and show numerically that a graded-index core can flexibly tune the differential mode group delay (DMD) and a cladding trench can flexibly control the guiding mode number. We optimized the spacing of the core and trench. Accordingly, we can achieve a 6 LP (10 spatial) mode operation and a low DMD while preventing the high index difference that leads to manufacturing difficulties and any loss increase. We finally describe our experimental results for a 6 LP (10 spatial) mode transmission line for use in a C + L band wavelength-division multiplexing (WDM) MDM transmission with MIMO DSP. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：37 / 45

页数：9

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