Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4957006 | Optical Fiber Technology | 2017 | 9 Pages |
Abstract
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 6Â 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 6Â LP (10 spatial) mode transmission line for use in a CÂ +Â L band wavelength-division multiplexing (WDM) MDM transmission with MIMO DSP.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Takayoshi Mori, Taiji Sakamoto, Masaki Wada, Takashi Yamamoto, Kazuhide Nakajima,