High-speed organic photo-detectors fabricated by vacuum and solution processes and application for optical transmission

2008 ◽  
Author(s):  
Yutaka Ohmori ◽  
Tatsunari Hamasaki ◽  
Taichiro Morimune ◽  
Hirotake Kajii
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Solution Processes ◽  
Photo Detectors

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.

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
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