Abstract
Time- and wavelength-division multiplexed passive optical network (TWDM-PON) has been selected by full service access networks as a primary solution for next generation PON stage 2 in April 2012. In this letter, we propose and demonstrate a symmetric 40-Gb/s TWDM-PON with 39-dB power budget. A reflective semiconductor optical amplifier is used in optical network unit as a pre-amplifier to enhance the sensitivity of downstream signals. For the upstream direction, a thermallytuned directly modulated laser with 10-Gb/s modulation rate is used as upstream colorless source, and a chirp management filter is employed in optical line terminal to mitigate chromatic dispersion therefore enabling fiber transmission. Symmetric 40-Gb/s TWDM-PON is experimentally demonstrated with a power budget of 39 dB, which could support 25-km fiber transmission and 1:1000 splitting ratio.
| Original language | English |
|---|---|
| Article number | 6470646 |
| Pages (from-to) | 644-647 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 25 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1 Apr 2013 |
| Externally published | Yes |
Keywords
- Chirp management filter
- Directly modulated laser (DML)
- Power budget
- Time- and wavelength-division multiplexed passive optical network (TWDM-PON)
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