High-Speed Coherent Transmission Using Advanced Photonics in Terahertz Bands

Atsushi KANNO  Pham TIEN DAT  Norihiko SEKINE  Iwao HOSAKO  Tetsuya KAWANISHI  Yuki YOSHIDA  Ken'ichi KITAYAMA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E98-C   No.12   pp.1071-1080
Publication Date: 2015/12/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E98.C.1071
Type of Manuscript: INVITED PAPER (Special Section on Terahertz Waves Coming to the Real World)
Category: 
Keyword: 
terahertz wave,  radio over fiber,  waveform transport,  coherent detection,  multi-level modulation,  radio on radio,  

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Summary: 
A terahertz-wave communication system directly connected to an optical fiber network is promising for application to future mobile backhaul and fronthaul links. The possible broad bandwidth in the terahertz band is useful for high-speed signal transmission as well as radio-space encapsulation to the high-frequency carrier. In both cases, the low-latency feature becomes important to enhance the throughput in mobile communication and is realized by waveform transport technology without any digital-signal-processing-based media conversion. A highly precise optical frequency comb signal generated by optical modulation and the vector signal demodulation technology adopted from advanced optical fiber communication technologies help perform modulation and demodulation with impairment compensation at just the edges of the link. Terahertz wave, radio over fiber, waveform transport, coherent detection, multilevel modulation, radio on radio.