Data erasure analysis of FPLD based on remodulation bidirectional PON system

A novel multi‐ary PolSK modulation for downstream signal in wavelength reusing wavelength division multiplexing passive optical network

“…Another way to achieve colorless ONUs is upstream remodulation. [15][16][17][18][19][20][21][22][23][24][25][26][27][28] The downstream signals of different wavelengths are wavelength division demultiplexed by the wavelength division demultiplexer in the remote node. In each ONU, part of the downstream signal is drawn out for upstream remodulation.…”

“…One solution is to reduce the extinction ratio (ER) to reduce the crosstalk. 16 Such a method is usually applied together with reflective semiconductor amplifiers (RSOAs) [18][19][20][21] or injected Fabry Perot laser diodes (FP-LDs) 22,23 to further erase the downstream signal by the saturated amplification. At the same time, RSOAs and FP-LDs could be used as upstream modulators directly and they improve the power budget.…”

“…Another way to achieve colorless ONUs is upstream remodulation 15–28 . The downstream signals of different wavelengths are wavelength division demultiplexed by the wavelength division demultiplexer in the remote node.…”

Data Deletion Analysis of Colorless Source in Passive Optical Network System

“…DBBÇ POA uygulamalarındaki en kritik problem kullanıcı tarafında düşük maliyette vericiler uygulamaktır [2,3]. Bu problemi çözmek ve operasyon harcamalarını azaltmak için renksiz kaynaklar kullanılmaktadır [4][5][6][7][8]. Renksiz kaynak uygulamasında birçok metot vardır ancak bunları temel olarak ikiye ayırabiliriz.…”