Abstract
We modify and simplify the inter-channel nonlinearity (NL) estimation method by using differential pilot. Compared to previous works, the inter-channel NL estimation method we propose has much lower complexity and does not need modification of the transmitter. The performance of inter-channel NL monitoring with different launch power is tested. For both QPSK and 16QAM systems with 9 channels, the estimation error of inter-channel NL is lower than 1 dB when the total launch power is bigger than 12 dBm after 1000 km optical transmission. At last, we compare our inter-channel NL estimation method with other methods.
Original language | English |
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Pages (from-to) | 24-29 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 417 |
DOIs | |
Publication status | Published - 15 Jun 2018 |
Keywords
- Fiber non-linear optics
- Fiber optics systems
- Metrology