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| Content Provider | IET Digital Library |
|---|---|
| Author | Lindeiner, Johannes Benedikt von Ingham, Jonathan Penty, Richard White, Ian |
| Abstract | A simulation-based assessment is made of the benefits of using advanced modulation formats including pulse amplitude modulation (PAM) and carrierless amplitude/phase modulation (CAP) to ease laser control requirements of a recently proposed novel uncooled multiple-input and multiple-output wavelength-division multiplexing (WDM) system. At a per channel bit rate of 25 Gb/s, the spectral efficiency improvements inherent to these schemes provide additional optical system power margin over non-return-to-zero (NRZ) modulation (0.4 dB for PAM-4 and 4.4 dB for CAP-16) for a link distance of 20 km. This allows the minimum channel spacing between channels to be reduced from 0.4 nm (NRZ) to 0.3 nm for PAM-4 and to 0.14 nm for CAP-16, this in turn allowing for a more stable operating region to be realised. Compared with a traditional 16 × 25 Gb/s dense WDM system, a power consumption saving of 30% can be realised using NRZ whereas PAM-4 and CAP-16 offer 29 and 27% savings, respectively. |
| Starting Page | 16 |
| Ending Page | 23 |
| Page Count | 8 |
| ISSN | 17518768 |
| Volume Number | 9 |
| e-ISSN | 17518776 |
| Issue Number | Issue 1, Feb (2015) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-opt/9/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-opt.2014.0003 |
| Journal | IET Optoelectronics |
| Publisher Date | 2014-12-08 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Bit Rate 25 Gbit/s CAP-16 Carrierless Amplitude-phase Modulation Channel Spacing Dense WDM System Distance 20 Km Link Distance Low Power Consumption Data Communication Link MIMO Communication Modulation And Coding Method Modulation Formats Multiplexing And Switching in Optical Communication Nonreturn-to-zero Modulation NRZ Optical Link Optical Modulation Optical System Power Margin PAM-4 Per Channel Bit Rate Pulse Amplitude Modulation Relaxed Laser Control Simulation-based Assessment Spectral Efflciency Uncooled Multiple-input Multiple-output Dense Wavelength-division Multiplexing System Wavelength Division Multiplexing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering |
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