Recent Progress in High-Speed and Large-Capacity Optical Transmission Technologies

2007 ◽  
Author(s):  
Akihide Sano ◽  
Hiroji Masuda ◽  
Eiji Yoshida ◽  
Yutaka Miyamoto
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Recent Progress ◽  
Large Capacity

Recent progress in an ‘ultra-high speed, ultra-large capacity, ultra-long distance’ optical transmission system (Invited Paper)

2016 ◽  
Vol 14 (12) ◽  
pp. 120003-120007 ◽  
Author(s):  
Shaohua Yu Shaohua Yu ◽  
Ming Luo Ming Luo ◽  
Xiang Li Xiang Li ◽  
Rong Hu Rong Hu ◽  
Ying Qiu Ying Qiu ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Recent Progress ◽  
Transmission System ◽  
Long Distance ◽  
Large Capacity ◽  
Ultra High Speed

Frontier research of ultra-high-speed ultra-large-capacity and ultra-long-haul optical transmission

2016 ◽  
Vol 9 (2) ◽  
pp. 123-137
Author(s):  
Daojun Xue ◽  
Shaohua Yu ◽  
Qi Yang ◽  
Nan Chi ◽  
Lan Rao ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Large Capacity ◽  
Ultra High Speed

Nearby Phase Search Algorithm with Reduced Complexity for Higher Order QAM Formats

2013 ◽  
Vol 760-762 ◽  
pp. 1869-1873
Author(s):  
Li Min Xia ◽  
Xian Zhou ◽  
Dong Yan ◽  
Na Na Zhang ◽  
Xiao Yun Wu
Keyword(s):  
Computational Complexity ◽  
Bit Error Rate ◽  
High Speed ◽  
Optical Transmission ◽  
Search Algorithm ◽  
Estimation Algorithm ◽  
Coherent Receivers ◽  
Multi Level ◽  
Reduced Complexity ◽  
Laser Line Width

This paper proposes a nearby phase search (NPS) algorithm based on BPS estimation algorithm in optical coherent receivers. And its suitable for arbitrary multi-level modulation. Making use of the continuity of phase change, the proposed NPS algorithm is applied to process nearby symbols by taking the pre-estimation phase of each symbol block as reference point. Compared to the traditional blind phase search (BPS) algorithm and its improved two-stage BPS algorithm, the performance of the proposed NPS algorithm is greatly improved in ultra-high speed coherent optical transmission system. By the simulation, the effectiveness and feasibility of the proposed algorithm are demonstrated in 28GBaud 16-QAM and 64-QAM system. Its shown that the computational complexity of the NPS algorithm greatly reduces in the guarantee of laser line width tolerance and bit error rate.

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