Title :
Next-Generation TDM-PON Based on Multilevel Differential Modulation
Author :
Sotiropoulos, Nikolaos ; Koonen, A.M.J. ; de Waardt, H.
Author_Institution :
COBRA Res. Inst., Eindhoven Univ. of Technol., Eindhoven, Netherlands
Abstract :
In this letter, a next-generation time-division multiplexed passive optical network (TDM-PON) based on multilevel differential modulation formats is proposed. Multilevel modulation enables the efficient scaling of bit rates without resorting to very high-speed electronics and photonics, while differential detection simplifies the detection process. The 40 Gb/s downstream signal is implemented with Star 16 quadrature amplitude modulation, while two upstream channels are evaluated, a simple, asymmetrical 10 Gb/s on-off keying signal and a 30-Gb/s differential eight phase-shift keying signal. Experimental results show very good receiver sensitivities, indicating the proposed modulation format´s suitability for future very high-speed TDM-PONs.
Keywords :
amplitude shift keying; differential phase shift keying; next generation networks; optical modulation; optical receivers; passive optical networks; quadrature amplitude modulation; time division multiplexing; Star 16 quadrature amplitude modulation; bit rate 10 Gbit/s; bit rate 30 Gbit/s; bit rate 40 Gbit/s; differential detection; differential eight phase shift keying signal; differential phase shift keying; multilevel differential modulation; next generation TDM-PON; on-off keying signal; receiver sensitivity; time division multiplexed passive optical network; Modulation; Optical fibers; Optical receivers; Optical sensors; Passive optical networks; Sensitivity; Differential phase shift keying; optical fiber communication; optical modulation; subscriber loops;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2238921
