@article{Bobrovs_Spolitis_Gavars_Ivanovs_2012, title={Comparison of Passive Chromatic Dispersion Compensation Techniques for Long Reach Dense WDM-PON System}, volume={122}, url={https://eejournal.ktu.lt/index.php/elt/article/view/1112}, DOI={10.5755/j01.eee.122.6.1112}, abstractNote={<span lang="EN-US">The maximum reach of the DWDM-PON system can be severely limited by chromatic dispersion (CD). This paper contains the investigation of long-reach high speed 16-channel DWDM-PON system with efficient CD pre-compensation and post-compensation methods. It is shown that CD compensation has a crucial role for guaranteed downstream optical link performance and maximum link length of high speed long-reach DWDM-PON system. The results show that usage of additional 7 km long dispersion compensating fiber (DCF) placed in central office (pre-compensation configuration) improves the DWDM-PON network reach by 19.3% (from 57 km up to 68 km), but if additional 2 km long DCF fiber is used in remote terminal (post-compensation configuration) link length can be extended up to 5.3% (from 57 km to 60 km).  It was found that usage of fiber Bragg grating (FBG) in central office (pre-compensation configuration) improves  network reach up to 26.3% (from 57 km up to 72 km), but using this FBG for CD post-compensation in remote terminal network reach can be improved by 15.8% or 9 km in length – from 57 km to 66 km.  Basis on the results authors recommend to use FBG as the best solution for CD compensation in pre-compensation configuration (before SMF line) in future high speed long-reach DWDM-PON systems.</span><p>DOI: <a href="http://dx.doi.org/10.5755/j01.eee.122.6.1112">http://dx.doi.org/10.5755/j01.eee.122.6.1112</a></p>}, number={6}, journal={Elektronika ir Elektrotechnika}, author={Bobrovs, Vjaceslavs and Spolitis, Sandis and Gavars, Peteris and Ivanovs, Girts}, year={2012}, month={Mar.}, pages={65-70} }