Abstract
The principle of the differential 8-level phase-shift keying (D8PSK)/amplitude-shift keying (ASK) (D8PSK/ASK) orthogonal modulation formats is investigated, and based on that, a novel scheme of optical label is proposed and demonstrated. In this scheme, D8PSK is used as the modulation formats of the payload signal whose transmission rate is 120 Gbit/s, while the 10 Gbit/s label signal uses ASK as its modulation formats, and at last, the impact of the signal extinction ratio (ER) on bit error rate (BER) is analyzed. The results of simulation show that better performance of this system can be achieved when the ER is 2.4 dB after the transmission in 80 km SMF and 16 km DCF.
| Original language | English |
|---|---|
| Pages (from-to) | 1182-1186 |
| Number of pages | 5 |
| Journal | Guangdianzi Jiguang/Journal of Optoelectronics Laser |
| Volume | 22 |
| Issue number | 8 |
| Publication status | Published - Aug 2011 |
| Externally published | Yes |
Keywords
- Differential 8-level phase-shift keying(D8PSK)
- Extinction ratio(ER)
- Optical label switching(OLS)
- Orthogonal modulation