Precise In-band OSNR and spectrum monitoring using high-resolution swept coherent detection

Xiangqing Tian*, Yikai Su, Weisheng Hu, Lufeng Leng, Peigang Hu, Hao He, Yi Dong, Lilin Yi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We propose and demonstrate a novel in-band optical signal-to-noise-ratio (OSNR) and spectrum monitoring technique based on swept coherent detection. This technique measures the signal and the in-band amplified spontaneous emission spectra by properly adjusting the polarization states of the signal and the local oscillator. A high resolution of 0.002 nm is achieved. By integrating the detected spectra of the signal and the noise, the in-band OSNR can be obtained in a very precise manner. We monitor the OSNR values with high accuracy in the range of 10-30 dB.

Original languageEnglish
Pages (from-to)145-147
Number of pages3
JournalIEEE Photonics Technology Letters
Volume18
Issue number1
DOIs
Publication statusPublished - 2006
Externally publishedYes

Keywords

  • Coherent detection
  • Optical performance monitoring
  • Optical signal-to-noise-ratio (OSNR)
  • Spectral analysis

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