A Polarization Change Monitor by Eigenvalue Analysis in Coherent Receiver

@article{Ye2019APC,
  title={A Polarization Change Monitor by Eigenvalue Analysis in Coherent Receiver},
  author={Tong Ye and Xiaofei Su and Ke Zhang and Zhenning Tao and Guoxiu Huang and Hisao Nakashima and Takeshi Hoshida},
  journal={2019 Optical Fiber Communications Conference and Exhibition (OFC)},
  year={2019},
  pages={1-3}
}
  • Tong Ye, Xiaofei Su, T. Hoshida
  • Published 3 March 2019
  • Physics
  • 2019 Optical Fiber Communications Conference and Exhibition (OFC)
A method is proposed to monitor polarization change of optical link. Several-hundred-krad/s polarization change was monitored within errors less than 20 and 50 krad/s in back-to-back and transmission experiments, respectively. 

Figures from this paper

Polarization Change Monitor Based on Jointly Applied Constant Modulus Algorithm and Carrier Phase Recovery in Coherent Receiver
  • Yanhui Qi, Tong Ye, T. Hoshida
  • Physics
    2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC)
  • 2019
TLDR
The coefficient of adaptive equalizer could monitor the channel response, such as fiber link polarization change, and the estimated carrier phase should also be included, if the equalizer uses constant modulus algorithm.
CNN Based Polarization Rotation Rate Estimation Using TIA Gain Monitoring in Integrated Coherent Receiver
TLDR
A hardware efficient machine learning based polarization rotation rate estimation scheme by monitoring TIA gain in the standard integrated coherent receiver was experimentally verified with various signal formats and conditions.
Multiple Access Noise Compensation in CO-OFDMA-PON Uplink Transmission Using Digital Phase Conjugated-Pilot Tones
TLDR
The transmission performance in terms of root-mean-square error, error-vector magnitude, bit-error-rate, and the overhead of redundant PTs was improved by using the proposed digital phase conjugated pilot-tones based MNs compensation technique in 20-km CO-OFDMA-PON uplink transmission.

References

SHOWING 1-7 OF 7 REFERENCES
Polarization dynamics in installed fiberoptic systems
This study monitors the polarization activity of operating light wave systems in urban and suburban areas. In 6 months of observation, multiple fast polarization fluctuations are detected, which are,
Shake before break: Per-span fiber sensing with in-line polarization monitoring
TLDR
A simple inline polarization monitoring scheme that detects fiber disturbances, enabling proactive protection against fast state-of-polarization transients induced by transmission-fiber disturbances is presented.
Proactive Fiber Damage Detection in Real-time Coherent Receiver
TLDR
This work develops an algorithm extension for a coherent receiver, coupled with machine learning, for recognizing fiber breaks before they occur, and demonstrates event classification with 95% accuracy over a real-time PDM-QPSK testbed.
Extremely fast (microsecond timescale) polarization changes in high speed long haul WDM transmission systems
Causes for microsecond timescale polarization changes in high speed WDM transmission systems were analyzed experimentally. Coiled patch cables and spooled DCF in combination with mechanical
Distributed fiber-optic intrusion sensor system
A distributed sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (/spl phi/-OTDR) is described. The sensing element is a cabled
Relation between fiber parameters and polarization changes due to mechanical vibrations
  • T. Hayashi, E. Sasaoka
  • Physics, Engineering
    2009 Conference on Optical Fiber Communication - incudes post deadline papers
  • 2009
Relation between fiber parameters and polarization changes due to mechanical vibration was investigated experimentally. We first revealed that smaller MFD non-circularity and fiber spin reduce
Proactive restoration of optical links based on the classification of events
TLDR
A new method of proactive protection/restoration where the schemes are triggered before the optical fiber is cut to reduce loss of data in case of a fiber cut and thus to improve network availability is proposed.