Title :
A Cost-effective and Low-overhead Chromatic Dispersion Compensation Scheme in TDM PON Systems
Author :
Yangyang Chen ; Xian Zhou ; Xue Chen ; Jie Su ; Changlei Li
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A cost-effective and low-overhead chromatic dispersion (CD) compensation scheme in TDM PON systems is proposed in this paper. In our scheme only one Electronic Dispersion Compensation (EDC) equalizer is used in OLT receiver to compensate each ONUs´ CD, which is different due to ONUs´ different fiber length. Therefore the cost of TDM PON systems could be reduced greatly. EDC first acquires the tap coefficient corresponding to each ONU by using training sequence and then switch the tap coefficient at corresponding time slot to compensate each ONU´s dispersion respectively. Then the known field of existed overhead in PON system is used to adjust the tap coefficient, which could save overhead significantly. Simulation results show that the scheme is feasible.
Keywords :
optical fibre dispersion; passive optical networks; time division multiplexing; OLT receiver; TDM PON systems; electronic dispersion compensation equalizer; fiber length; low-overhead chromatic dispersion compensation scheme; tap coefficient; time slot; training sequence; Dispersion; Optical fibers; Optical network units; Passive optical networks; Time division multiplexing; Training; Chromatic Dispersion; TDM PON; training sequence;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
DOI :
10.1109/IMCCC.2012.252
