Comparison of return-to-zero differential phase-shift keying and ON-OFF keying in long-haul dispersion managed transmission
| Autor: | Chris Xu, Xing Wei, Xiang Liu, L. F. Mollenauer |
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| Rok vydání: | 2003 |
| Předmět: |
Physics
Transmission (telecommunications) On-off keying Wavelength-division multiplexing Electronic engineering Keying Spectral efficiency Electrical and Electronic Engineering Return-to-zero Atomic and Molecular Physics and Optics Amplitude and phase-shift keying Amplitude-shift keying Electronic Optical and Magnetic Materials |
| Zdroj: | IEEE Photonics Technology Letters. 15:617-619 |
| ISSN: | 1941-0174 1041-1135 |
| Popis: | Performance of return-to-zero (RZ) differential phase-shift keying (DPSK) in ultralong-haul dense wavelength-division-multiplexing (WDM) dispersion managed transmission is studied experimentally and compared with conventional ON-OFF keying (OOK) in a 10-Gb/s system. We show that, while OOK out-performs phase-shift keying in a low spectral efficiency WDM system, the performance of DPSK is comparable to OOK at 10-Gb/s transmission with a spectral efficiency of 0.2. Furthermore, RZ DPSK is advantageous in a high spectral efficiency (e.g., >0.4) system and our numerical simulation results show superior performance of DPSK at 10 Gb/s with 25-GHz channel separation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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