Layered Decoding of Nonbinary LDPC Codes Suitable for High-Speed Optical Communications

2011 ◽  
Author(s):  
Murat Arabaci ◽  
Ivan B. Djordjevic
Keyword(s):  
Optical Communications ◽  
High Speed ◽  
Ldpc Codes ◽  
Layered Decoding ◽  
Nonbinary Ldpc Codes

scholarly journals Inverted p-down Design for High-Speed Photodetectors

Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 39
Author(s):  
Masahiro Nada ◽  
Fumito Nakajima ◽  
Toshihide Yoshimatsu ◽  
Yasuhiko Nakanishi ◽  
Atsushi Kanda ◽  
...  
Keyword(s):  
Amplitude Modulation ◽  
Optical Communications ◽  
High Speed ◽  
Pulse Amplitude ◽  
Avalanche Photodiode ◽  
Device Fabrication ◽  
Pulse Amplitude Modulation ◽  
Optical Coupling ◽  
Pin Photodiodes

We discuss the structural consideration of high-speed photodetectors used for optical communications, focusing on vertical illumination photodetectors suitable for device fabrication and optical coupling. We fabricate an avalanche photodiode that can handle 100-Gbit/s four-level pulse-amplitude modulation (50 Gbaud) signals, and pin photodiodes for 100-Gbaud operation; both are fabricated with our unique inverted p-side down (p-down) design.

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