Abstract
We for the first time proposed to utilize the orthogonal filtering technique to suppress the inter-core crosstalk (IC-XT) in multicore fiber (MCF) transmission. It could simplify the implementation of weakly-coupled MCF (WC-MCF) signal reception without multiple-input and multiple-output (MIMO) digital signal processing, by extracting the individual lanes separately. Effective IC-XT mitigation using a pair of orthogonal filters are demonstrated for MIMO-free 2-core MCF transmitted signal receptions. 600-Gbps 64-QAM (quadrature amplitude modulation) signal transmission over 100-km MCF is emulated by constructing a concrete transmission model based on coupled nonlinear Schrodinger equations. Maximum Q factor improvement of 6 dB can be achieved using orthogonal matching filters to suppress IC-XT at -10dB. The effect of spatial mode dispersion on the filter orthogonality performance is also analyzed.
| Original language | English |
|---|---|
| Article number | 9893163 |
| Pages (from-to) | 1373-1376 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 34 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 15 Dec 2022 |
| Externally published | Yes |
Keywords
- Integrated optics
- inter-core crosstalk
- Multicore fibers
- Optical fiber couplers
- Optical fiber dispersion
- Optical fiber filters
- Optical fibers
- Optical receivers
- orthogonal filtering
- Q-factor
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering