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 language | English |
|---|---|
| Pages (from-to) | 145-147 |
| Number of pages | 3 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 18 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2006 |
| Externally published | Yes |
Keywords
- Coherent detection
- Optical performance monitoring
- Optical signal-to-noise-ratio (OSNR)
- Spectral analysis